With DVD player or PC? If DVD player then the VCD is easy, simply hook your DVD player into VCR using RCA, S-Video, etc cables, depeding on your VCR/DVD and play the VCD and record with VCR. For DVD, you need to have a box that removes Macrovision, otherwise same instructions will do. The Macrovision box can be bought from here: http://www.qksrv.net/click-1091970-5439461
If you have a tv card you can connect your vcr to your computer. There is a lot of dodgy software around the net ahmmm mmm hmhhmh kazzaa hmm hhmmmhmh ahemm (sorry had to clear my throat) that can be downloaded that will play your dvd on your pc without blocking the picture from your vcr.