Heres a few suggestions:
1. Burn all of your important files to CD. Ok, this may be hard without toast, but unless you wanna lose them, you may have to use some other software(can't OS X burn without 3rd party software?). Then reformat, and reinstall Jaguar, and put back the important files. You may want to record serial numbers on a piece of paper.
2. Find someone else with a Mac(or use another one that you have), and Ethernet/Airport your files to their computer. Reformat yours with Jaguar, and Ethernet/Airport the files back.
3. Wait for Panther to come out officially.
4. Reformat and delete everything.