Scubi, have you had any luck?
I am stuck in exactly the same position you describe.
I just keep getting a message about the file being corrupt or unrecognised format - or the disc thing you mention.
It's so frustrating - I'm sure it's just a matter of doing the right things in the right order but I can't do it.
I've got winrar and everything.
any help very gratefully received
Equally neolithic Rh.