@Gav
I have a Hardfile of my own with Mac OS 7.5.5 on it and i have used it with both Shapeshifter and Basilisk II. A Hardfile is basically a Mac Hard Drive file (well duh!) with the OS installed on it. Anyway, if you are interested then post/email or pmail me and i will give you a link to download it (email wise). I hope that this helps.
Regards,