Hi, I'm not sure how much this will help, but it's worth a shot:
Have you considered using emulation instead of the old Mac hardware? If your need is to play older System 7 games and the like, a program like Basilisk II might do the trick. I have a couple of old programs from those machines that I like, and rather than keep the old hardware around I find that it's good enough to do what I need to do.
If you really need to exchange data with this old hardware, I think Toast can produce the oldskool Mac HFS CD file system. That might be your best bet.
HTH
