Well, in the worst case scenario, you could always download a trial version of another burner (e.g., Alcohol 120%). That's what I used to burn 3.6, after my 30-day trial of Nero expired. Others have posted various open-source burners, and, of course, once you get at least one version of Knoppix going, you can burn the new version while running the old (assuming that you have a second CD drive or run fromhd).

jd