I've been testing windows 7 for about 3 weeks now and have noticed that the cisco vpn client doesn't work... ! x64 only.
I have been looking around for other sources of vpn client and this 1 caught my eye. This software has been an great bit of kit, i have had it connect to cisco ASA's for upto 17 hours and the line hasen't dropped.
It's pretty cheap to licence aswel.