Then I would find a friend with an XP system and attach the drive to it. You may need to install drivers (which you would get from Iomega's website). You can uninstall them afterwards. Attach the drive, copy your files to the XP box, burn the files to CD/DVD-R. Buy your friend a beer. :-)
Note: If you get the same issue on XP with all discs, then the drive has probably failed. Then you've got to find someone who still has a USB Iomega Zip Drive. Some techs will still have them; I have one on my shelf - haven't used it in years but I keep it just in case a client has your problem.
MS-MVP - Elephant Boy Computers - Don't Panic!