as for backing up your data...evidently burning to cd is out of the question??? just out of curiosity...is the cd your only issue? if so...you might want to try downloading the driver for the cd first before you do an os reinstall. if you can see the model in the device manager...go to the manufacturer's website or somewhere like www.driverguide.com
and download the correct driver.
if you would rather do the backup and reinstall...would be nice to know what system you have? (brand/model/specs) in order to backup data...gonna need floppy drive, or networked to another computer, or have an external hdd, or another hdd you can install in the box as a slave. more info... thanks