Create an image of the HDD on a CD-R

Can anyone help me to figure out how to create a snapshot of Windows98 OS as well as data on the Hard disk to a CR-R so that I can recover from a hard disk crash?

I have a CDRW and am planning to install Linux (as a dual boot) but before I do that I want to ensure that I have completely backed up my hard disk and can survive a crash if things go wrong. The idea is to have everything restored back to the previous state – off the CD-R.

Thanks,
Mehul Shah.