You need a bootable Mac OS partition to reboot into a *nix anyway.
To make bootable Mac floppys on the PC, I would suggest Gemulator Explorer or MakeDisk from emulators.com. You can also learn more about the process by visiting MacWindows.
The best OS for that machine is probably 7.6.1 and you can boot that from a (non-free) CD. You can get a CD by asking in the Trading Post forum here or searching Ebay.
If you have lots of RAM, 8.1 would be an option too. 8.0 is buggy, but from there to 8.1 is a free upgrade download from Apple.
To install 7.5.x you need to download the floppy image set from Apple, and then create Mac formatted floppys on the PC. The first one will boot the Mac and begin the installation process. DO NOT attempt to uncompress the files on the PC.
To make bootable Mac floppys on the PC, I would suggest Gemulator Explorer or MakeDisk from emulators.com. You can also learn more about the process by visiting MacWindows.
The best OS for that machine is probably 7.6.1 and you can boot that from a (non-free) CD. You can get a CD by asking in the Trading Post forum here or searching Ebay.
If you have lots of RAM, 8.1 would be an option too. 8.0 is buggy, but from there to 8.1 is a free upgrade download from Apple.