VIZACOM INC
EXHIBIT 10.5
<DOCUMENT>
<TYPE>EX-10
<SEQUENCE>7
<FILENAME>ex10-5011228.txt
<DESCRIPTION>EXHIBIT 10.5
<TEXT>
                                                                    Exhibit 10.5

                                PWR SYSTEMS, INC.
                         3512 Veterans Memorial Highway
                             Bohemia, New York 11716


                                                December 28, 2001

Vincent DiSpigno
16 Amboy Lane
Lake Grove, New York 11755

Dear Mr. DiSpigno:

     This letter shall serve to evidence your  agreement to defer payment of the
first two  installments  under the Second Amended and Restated  Promissory Note,
dated  September 28, 2001,  made by PWR Systems,  Inc.  (the  "Company") in your
favor in the aggregate  principal  amount of $153,412,  until the earlier of (i)
March 1, 2002, or (ii) the date of the first  closing under a private  placement
of  Vizacom  Inc.  ("Vizacom")  common  stock,  par value  $.001 per  share,  to
accredited  investors as contemplated by the Letter of Intent dated September 7,
2001, between  SpaceLogix,  Inc. and Vizacom.  Interest shall continue to accrue
during the deferment period.

     Please sign and return a copy of this letter to the undersigned to indicate
your  acceptance of the terms set forth herein,  whereupon  this letter and your
acceptance shall constitute a binding  agreement  between you and the Company as
of the date hereof.

                                        Sincerely,

                                        PWR SYSTEMS, INC.


                                        By:  /s/ David N. Salav
                                           -----------------------------
                                           David N. Salav
                                           President

Accepted and Agreed:

  /s/ Vincent DiSpigno
-------------------------
Vincent DiSpigno

</TEXT>
</DOCUMENT>
