Okay,

1) Had 9.1 on it.

2) Booted from 8.1 CD, installed 8.1

3) On mac mini made 7.6 CD.

4) Installed 7.6 from 8.1

5) Went to boot, says " Cannot use this system disk on this model macintosh"

6) Got 7.6 image ( From my friend Kirk Zathy, old owner of macdomain.org. It is 7.6 retail made into a toast image)

7) Burnt with toast 7.1, Will not boot. It has a floppy with a question mark on it.