CSC HOLDINGS INC
EXHIBIT 10.45
<DOCUMENT>
<TYPE>EX-10.45
<SEQUENCE>10
<FILENAME>a2130757zex-10_45.htm
<DESCRIPTION>EXHIBIT 10.45
<TEXT>
<HTML>
<HEAD>

</HEAD>
<BODY BGCOLOR="#FFFFFF" LINK=BLUE  VLINK=PURPLE>
<BR>

<div style="font-family:'Times New Roman';">

<p align="right" style="margin:0pc 0pc .0001pt;text-align:right;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Exhibit
10.45</font></b></p>

<p style="margin:0pc 0pc .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="right" style="margin:0pc 6.0pc .0001pt 0pc;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">As of January&nbsp;2, 2004</font></p>

<p style="margin:0pc 0pc .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0pc 0pc .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Sheila Mahony<br>
89 Cove Road<br>
Oyster Bay Cove, NY&nbsp;&nbsp;11771</font></p>

<p style="margin:0pc 0pc .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;margin:0pc 0pc .0001pt 3.0pc;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Re:</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><u>Change
in Your Retirement Date</u></p>

<p style="margin:0pc 0pc .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0pc 0pc .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Dear Sheila:</font></p>

<p style="margin:0pc 0pc .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0pc 0pc .0001pt;text-indent:6.0pc;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">This letter relates to
your Retirement Agreement, dated June&nbsp;18, 2003 (your &#147;<i><font style="font-style:italic;">Retirement Agreement</font></i>&#148;), with
Cablevision Systems Corporation and CSC Holdings, Inc., and confirms our mutual
agreement to extend the duration of your employment until March&nbsp;15, 2004.</font></p>

<p style="margin:0pc 0pc .0001pt;text-indent:6.0pc;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0pc 0pc .0001pt;text-indent:6.0pc;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Accordingly, on your
acceptance of and agreement to this letter, (1) the term &#147;<i><font style="font-style:italic;">Retirement Date</font></i>&#148; in your
Retirement Agreement is amended to refer to March&nbsp;15, 2004, (2) the
reference to January&nbsp;2, 2004 in the Memorandum annexed to your Retirement
Agreement as <i><font style="font-style:italic;">Exhibit A </font></i>will be amended to refer to March&nbsp;15, 2004
and (iii) the reference to January&nbsp;in Section&nbsp;2(a) of the Consulting
agreement annexed to your Retirement Agreement as <i><font style="font-style:italic;">Exhibit C </font></i>will be amended to
refer to March.&#160; In addition, you agree
that you will not be entitled to participate in or receive any awards under any
long-term incentive program for services rendered in 2004.</font></p>

<p align="center" style="margin:0pc 0pc .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>


<div style="margin:0pc 0pc .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

<font size="2" face="Times New Roman" style="font-size:10.0pt;">
<!-- ZEQ.=1,SEQ=1,EFW="2130757",CP="CABLEVISION SYSTEMS CORPORATION",DN="9",CHK=938898,FOLIO='',FILE="DISK030:[04NYC0.04NYC3190.EDGAR]EX10-45_3190.CHC",USER="JGUERRE",CD='Mar 13 04:18 2004' -->
<br clear="all" style="page-break-before:always;">
</font>

<p align="center" style="font-size:10.0pt;margin:0pc 0pc .0001pt;text-align:center;">&nbsp;</p>

<p style="margin:0pc 0pc .0001pt;text-indent:6.0pc;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Other than these changes,
this letter does not change your Retirement Agreement or the annexed Exhibits
in any way, and your Retirement Agreement will remain in full force and effect.</font></p>

<p style="margin:0pc 0pc .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="74%" colspan="2" valign="top" style="padding:0pc 0pc 0pc 0pc;width:74.54%;">
  <p style="margin:0pc 0pc .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">CABLEVISION SYSTEMS
  CORPORATION</font></p>
  </td>
  <td width="23%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:23.06%;">
  <p style="margin:0pc 0pc .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">CSC HOLDINGS, INC.</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:2.4%;">
  <p style="font-size:1.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
 </tr>
 <tr>
  <td width="74%" colspan="2" valign="top" style="padding:0pc 0pc 0pc 0pc;width:74.54%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
  <td width="23%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:23.06%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
  <td width="2%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:2.4%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
 </tr>
 <tr>
  <td width="22%" valign="top" style="border:none;border-bottom:solid windowtext .5pt;padding:0pc 0pc 0pc 0pc;width:22.96%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
  <td width="51%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:51.58%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
  <td width="23%" valign="top" style="border:none;border-bottom:solid windowtext .5pt;padding:0pc 0pc 0pc 0pc;width:23.06%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
  <td width="2%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:2.4%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
 </tr>
 <tr>
  <td width="74%" colspan="2" valign="top" style="padding:0pc 0pc 0pc 0pc;width:74.54%;">
  <p style="margin:0pc 0pc .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:&#160;&#160; James L. Dolan</font></p>
  </td>
  <td width="23%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:23.06%;">
  <p style="margin:0pc 0pc .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:2.4%;">
  <p style="font-size:1.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
 </tr>
 <tr>
  <td width="74%" colspan="2" valign="top" style="padding:0pc 0pc 0pc 0pc;width:74.54%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
  <td width="23%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:23.06%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
  <td width="2%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:2.4%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
 </tr>
 <tr>
  <td width="74%" colspan="2" valign="top" style="padding:0pc 0pc 0pc 0pc;width:74.54%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
  <td width="23%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:23.06%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
  <td width="2%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:2.4%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
 </tr>
 <tr>
  <td width="74%" colspan="2" valign="top" style="padding:0pc 0pc 0pc 0pc;width:74.54%;">
  <p style="margin:0pc 0pc .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Accepted and Agreed:</font></p>
  </td>
  <td width="23%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:23.06%;">
  <p style="font-size:1.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
  <td width="2%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:2.4%;">
  <p style="font-size:1.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
 </tr>
 <tr>
  <td width="74%" colspan="2" valign="top" style="padding:0pc 0pc 0pc 0pc;width:74.54%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
  <td width="23%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:23.06%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
  <td width="2%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:2.4%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
 </tr>
 <tr>
  <td width="74%" colspan="2" valign="top" style="padding:0pc 0pc 0pc 0pc;width:74.54%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
  <td width="23%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:23.06%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
  <td width="2%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:2.4%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
 </tr>
 <tr>
  <td width="22%" valign="top" style="border:none;border-bottom:solid windowtext .5pt;padding:0pc 0pc 0pc 0pc;width:22.96%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
  <td width="51%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:51.58%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
  <td width="23%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:23.06%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
  <td width="2%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:2.4%;">
  <p style="font-size:10.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
 </tr>
 <tr>
  <td width="74%" colspan="2" valign="top" style="padding:0pc 0pc 0pc 0pc;width:74.54%;">
  <p style="margin:0pc 0pc .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Sheila Mahony</font></p>
  </td>
  <td width="23%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:23.06%;">
  <p style="font-size:1.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
  <td width="2%" valign="top" style="padding:0pc 0pc 0pc 0pc;width:2.4%;">
  <p style="font-size:1.0pt;margin:0pc 0pc .0001pt;">&nbsp;</p>
  </td>
 </tr>
</table>

<p align="center" style="margin:0pc 0pc .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0pc 0pc .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2</font></p>


<div style="margin:0pc 0pc .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>


<!-- ZEQ.=1,SEQ=2,EFW="2130757",CP="CABLEVISION SYSTEMS CORPORATION",DN="9",CHK=1031246,FOLIO='2',FILE="DISK030:[04NYC0.04NYC3190.EDGAR]EX10-45_3190.CHC",USER="JGUERRE",CD='Mar 13 04:18 2004' -->
<BR>
<!-- SEQ=,FILE='QUICKLINK',USER=JGUERRE,SEQ=,EFW="2130757",CP="CABLEVISION SYSTEMS CORPORATION",DN="9" -->
<!-- TOCEXISTFLAG -->
</BODY>
</HTML>

</TEXT>
</DOCUMENT>
