Find someone with a Mac who will read your CD, and save it as an RTF file (rich text format) on a fresh CD. In theory this should be able to be read by a PC. However, it does not do anything useful with the formatting, so if it does work you may have a lot of formatting to do to get it back into script shape. This doesn't always work, but it's worth a try.
Next would be to find someone with a Mac that is set up for the dual Mac/PC base. You should be able to save it as a PC file.
If you don't know anyone with a Mac try your local library or a nearby college.
Good luck - I've had to go back and forth many times over the years and it is never easy.
Elena