I couldn't find the one I use on Newegg, a DVico Fusion HDTV DVB-T.
http://www.dvico.com/
To answer some of your question, P4 will have no problem. My card needs a 800MHz CPU min. Hard disc space will be the biggest problem, 2hrs takes about 6gig. in high def.
BTW are you wanting to just record TV or backup some old video tapes.