On Windows, HFS+ can be read only with the aid of software such as MacDrive or MacOpener; it's possible to run MacOS 8.1 in emulation, but I know of no suitably old software that can open .dmg ...

Ok, Im running 9.2.I have some .dmg files I want to burn. I dont see an option to do this in my toast version (4.1.2) and the lastest version of disk copy (6.3 ?) does not support mounting .dmg ...