You would (generally) need one video and at least one audio (preferably two for stereo). Many videocards only have a VGA out, and some have a tv coaxial out (this is the "antenna screw-on" connector, and you really, really, don't want to use this except in a worse-case scenario.) Try to get a video out with a "video out" cable, that gives you at least the traditional video/audio RCA outs (like the yellow/red/white connectors on the back of your VCR) or, if possible, an "S-video" connector (looks like a PS/2 mouse connector with four pins...of course, your camcorder must be able to accept this as well.)

The ATI All-in-wonder comes immediately to mind, but there are others.