Deamon Tools, Virtual Drive: Daemon Tools is a program that creates a virtual drive for you. Basically, it creates a fake (phantom) CD/DVD-ROM drive for you, that acts exactly the same way as a normal CD/DVD drive would. It uses CD images as it's medium, so when we say "mount a CD image into Daemon Tools", we mean to attach a CD image to this phantom drive so it acts like there is an actual disc in the drive. Daemon Tools emulates the data found on the CD image as a real disc. Once mounted, you can use the virtual drive the same way as you would a normal CD-ROM drive, including Disc-to-Disc copying method from one CD drive to another, etc. Needlesss to say, since the advent of DT and virtual drives, not all people feel the need to burn the PSX games (not just applicable to those burn, but for all disc-based media) they intend to emulate on a disc. Instead, they simply mount the CD image to the virual drive and play from there. Real discs are also far more succeptible to read errors and such. But since you have a real DC, of course you want to burn your games. Like I said earlier though, a Disc-to-Disc copy in Nero should be a lot less painless that going through multiple programs just to convert a CD image to some other format.