Hmm that's hard to say if it's the same one. It's been quite a while so I don't know.
Also, I don't think it matter if what type of CDR you use as long as the data fits on the disc. I was thinking it did at one point since some GD-ROMs use dummy files. And in order to get the same order of files as the GD-ROM you might need a disc with more space because of the dummy file, that may be the case but don't quote me on that.
To answer your question, I use 80 minute discs for all my back ups. Except the DP3 disc I made yesterday I had to use a 99 minute CDR to fit the 3 games I wanted.
Big thank you to hrb2k and Excalibur007 ( and Jeffma, although he didn't help me directly) for the info. I made my fiirst custom DP3 disc and everything was turned out great (Finally!

). I definately like DP3 better than PW for compilation CDs. Although Dynamite Cop still doesn't work no matter where I put the files(I'm starting to think this game has some sort of protection but I don't see how). I'll just give up on that one since all my other games worked so I'm not gonna complain.
I think I can make a tutorial for this now. If people are still interested I'll make one. Credits will go to hrb2k and Excalibur007 for helping me out.