Well, johnfdeluca and all, I must have done something seriously wrong there.
I was impressed with the ease of setting up a slipstreamed disc and the amount of information built into the program.
However when I rebooted from the disc it did a lot of thinking and occasionally telling me things, only to stop at a screen with a small amount of garbled data on it.
To my surprise it doesn't appear to have damaged anything. I must have done something wrong, perhaps in burning the disc.
I don't think I will try that again unless I can get an English language help document first.
I'll try the RyanVM solution now.