Use DVD Shrink to backup your DVDs, can be used in conjunction with any DVD burning software.
DVD Shrink can also burn backup DVDs with the latest version of Nero installed. If you prefer to stick with another brand of burning software, then you can still use DVD Shrink. The output from DVD Shrink can be saved as a files which you can then burn with the software of your choice.
Windows 9x/2000/XP.