It should work, but it will just have some features disabled (Eyefinity, DX10/11, etc) that wouldn't work on XP anyway.
Thanks all for the input! I will install it tomorrow...just another question...When i install it, how will I know if it works perfectly? I know i can obviously just check my fps increase on the games I have, but how will i know that everything is squared away and perfect? Meaning no more worrying about potential problems.