SmarSquid wrote:
Actually, my video card does run its own fan.

Okay, well anyway I've seen a couple models of ATI 9600 that don't have
fans, which means the graphics chip doesn't use a lot of power.

the power supply has a 4-pin connection that matches a 12v female port on
the motherboard. Currently it is not connected; I'm not sure what it does.

That is probably the source of at least one of your problems. That
should be connected. See the ATX12V spec or so at www.formfactors.org