Mojorsing,
We do recommend the ATI cards, but this is because they are easier to deal with. You don't have to upgrade there drivers as much as you do for NVIDIA. It seems to get any NVIDIA card to work, you must go to
www.nvidia.com and update to their latest driver. With ATI, most of the time you won't have to do this, but sometimes you still do have to.
There is a workaround for the XP problem of the sweep being off, under XP, this is located at:
http://www.mtu.com/vbulletin/showthr...p?threadid=876
Very last post, has the answer to XP in it.