How do I share NTFS folder from OSX Lion to Window 7
This is the reason why you can't share your NTFS drive from OSX to Windows: In OSX Lion Apple replaced the open source samba with apples own version which unfortunately ignores anything that isn't hpfs. So it hasn't anything to do with your drivers or such.

This topic was discussed at length at MacRumors. The proposed solution is to install XCode and MacPorts followed by


sudo port install samba3
Navigate to /opt/local/etc/samba3 and modify smb.conf to your needs
Disable File Sharing in System Preferences
Launch smbd &amp; nmbd daemons: sudo /opt/local/sbin/smbd -D &amp;&amp; /opt/local/sbin/nmbd -D
To have smbd/nmbd launch automatically during boot you may also need to add an appropriate launchd file.