My writer doesn't support DAO, can I still copy dummied dc cds?

[Diggedy76]

I have a bunch of games that are already burnt to cd, but cannot make further copies, they seem to be the ones with dummy files. I've tried nero, cdrwin, winoncd, clonecd, among others. This is frustrating the shit out of me. I'd be grateful if anyone out there could help. I can burn & dummy selfbooting games using the DC Self-Bootable CD Batch File v3.4 and Selfboot helper, so I figure there must be a way to make copies of already burnt discs.