For all those poor ati guys out there having issues with crossfire support download this file and copy+paste it in your skyrim installation folder from this location http://www.dllme.com/dll/files/atiumdag_dll.html
IMPORTANT NOTICE!!!!! BE SURE TO ALT+TAB AT LEAST ONE TIME ONCE YOU ARE IN THE GAME (this for some weird unknown reason makes x-fire work)

To make ANY gamepad work with Skyrim (all games with xbox360 contoller support will work with this) download these files and copy paste them in your Skyrim installation folder and VOILA you have a working gamepad!!!
http://www.tocaedit.com/IB/index.php?automodule=downloads&showfile=4

I hope all this helps !!!!

btw i play the game on ultra with 2x5870 crossfire and i never drop below 60FPS

cheers

P.S "MAKE SURE YOU HAVE CUSTOM ANTILIASING SETTINGS IN YOUR Catalyst control center in "Application Cotrolled" and MOrphological AA box unticked!!!!
this game really hates custom antiliasing!!!!!