I have a small pc, a shuttle, that is connected only to a tv. The tv is always in 640x480, and in this mode the pc is capable of playing doom3 and half-life2 at good speeds. But its got an old geforce3 pre-release with software svideo and no capture ability. So what I'm wondering is what would be a good all-in-wonder style card for this computer. (Its a 2.5ghz p4 with 512mb of ram)