Here is the situation :
I had a 7950gx2 working fine under XP, connected to my 1080P Sharp Aquos TV. XP was running fine at 1920 x 1080, 60hz, 1080P.
I've then replaceed the video card with a brand new eVGA 8800 Ultra. Plugged the same way to my Aquos TV.
Power UP the PC, and see my PC...