with USB you'll take a performance hit because it uses your CPU to do most of the work.
PCI is the way to go if you can swing it, but USB is still fine.
ok PCI it is, I think I'll remove the 56K modem because WHY would i EVER use that? I put a bid on a Linksys PCI wifi card on ebay.
The PC has a built in TV Tuner that I think I'm going to try first, and see how well that works. I can get a trial of Beyond TV that would be perfect, and see how it goes.