I had this problem with my 6700 with Vista as well I'm running Vista Ultimate at 32bit at home and my cpu is brand new so it works. First what you (should do is download a version with an updated driver for Wmdc from here
http://www.microsoft.com/windowsmobi...icecenter.mspx) Make sure you download the correct one in my case it was English 32-bit. Go ahead and isstall that and you should be fine assuming that you have already set up a sync patnership through activesync (NOTE: Activesync and Windows Mobile Device Center are seperate programs) You should be able to find both of them in under start menu control panel if you are running vista. If you have NOT set up a sync partnership with your device you'll need to click on ActiveSync and click the Set up new Sync Partnerships link on the left with your devie connected to your pc or laptop of course via usb. with my first cpu I had to turn the firewall setting to off for the first 5 or 6 time I tried to connect so be sure to try that as an option with my new cpu I didn't have too so it seems the some of the updates vista downloads everyday have paid off a bit. Anyhow hopefully this has help in some sort PEACE!!!!