DVR Cards For Mini Cameras

[JustGLiTcH]

I work with several schools who are interested in birdbox cameras. Several of them already have small cameras that have the yellow and white connectors, but I was wondering if anyone had a good suggestion for a decent DVR card to use with the PC. One school i work with currently has an X Vision DVR card, but it doesnt work with procaster so I have to record the software running on the desktop.

Ideally it would need to be cheap (with school budget cuts etc.)

Thanks!