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Thanks all.
ChuckFickens, I downloaded freeisoburner, but it does exactly the same as Nero in that it writes the thirteen folders and other stuff to the CD. The contents of the Nero disc and the isoburner disc are identical.
Mr-Tom, I did as you suggested and extracted via Winrar. the files were extracted to a new folder called "Ford Manual" in my downloads folder. However, the contents of the folder are exactly the same as the discs, so I still can't open/read them.
I've noticed there are loads of .ARC files in the folders, but I'm unable to find anything to open them.
Thanks again.
There