When you say it can record to VCR, do you mean that you can output the DV footage direct to VCR via composite/s-video?
If the zr80 has the facility to record from composite/s-video then you could get a scart to composite/s-video adaptor (make sure it is a switchable one, most are designed to only work as a scart input to the VCR/TV) and send the TV station from the VCR to the camcorder for recording. You could then transfer the footage to your PC in the normal way from your camcorder