This is exactly what i did, and its works for me ( tap click, 2 finger right click, 2 finger scroll )
1. Down load this file:
http://rapidshare.com/files/186372631/Archive.zip
2. Manually install 2 files Applemultitouch, Appletrackpad
3. Reboot.
4. Update the "new mutitouch driver" as described in my original message.
5. Reboot.
6. Go to Control Panel, Boot Camp, customize the behavior of you touchpad
(PS. FYI I did try the compatibility mode,as some one said, DID NOT WORK!) This message is written in my
Boot camp 7, with the "new" 2-finger touchpad!