Not sure if this will help, but I'll mention what I have working on my MBP 2011 w/ Windows 7 (64 bit):
-Install Bootcamp 3.2 from Snow Leopard DVD
-No dice with Catalyst Software Suite installer 11.2 (catalyst
mobility_64-bitutil.exe). I can't remember exact error but it couldn't find a compatible card.
-Installed Catalyst Control Center (11-2
mobility_vista_win7_32-64ccc.exe)
-Installed HydraVision Package (11-2
mobility_vista_win7_32-64hydravision.exe)
-Installed AMD Media Codec Package (11-2
mobility_vista_win7_32-64xcode.exe)
Driver is reported as 8.812.0.0 (1/4/2011) and I believe that this did not change during the CCC install. I think it recognized that it was there and left it alone.
I haven't played with the PowerPlay settings, but it looks like it gives me the option to set an active power plan and then enable PowerPlay for either "Plugged In" and/or "Battery". Plus there are 3 additional check boxes for refresh rate, brightness, and color depth.
Are these settings meant to allow for the onboard Intel video to kick in? My Vaio has a switch that is actually pretty sweet that allows for Intel/Nvidia or both (ondemand), but I have been wondering how the MBP did the switching.
I also got a couple minidisplay cables and tested them. Both the minidisplay to HDMI and VGA worked (they are both Encore Electronics adapters), but the VGA only gets 1680x1050 even though the cable says that it is rated for 1920x1200. And the HDMI doesn't do sound. This seems to be consistent in Windows and OSX.
My biggest problem (and actually the reason that I stumbled on this thread) has been the Bluetooth driver support under Bootcamp, which appears to be way off course. I won't divert this thread on that tangent...
Hopefully this helped at least a little... I am pretty big into backing up and restoring with Ghost, so if you want me to try anything let me know, I can back it out easy enough.