How to get my VCDs to have at least a VCR quality?

I capture using Dazzle DVC1; edit & render using Media Pro 6.5; and finally burn using Adaptec Deluxe 4.0 or 5.0. Sometimes I even use WinOnCD to burn. I must have burned at least a few dozens by now. Those using still pictures have good playback quality. The problem is with motion pictures. None of the motion picture VCDs I burn is really watchable. They may look good on multimedia PC, but try to play them on VCD player, you wonder why you ever bother with video edtiing. SO, what did I miss here? I am pretty sure I got everything right in settings. The part-time professionals can produce VCDs with VCR quality, why can't I?

Singapore.