Michael If you use the debian install cd it should act as a rescue boot disk, you DO need to select this option or it will wipe and reinstall your system. Once it does you can start linux and then just type 'lilo' or '/sbin/lilo' at the prompt and it should restore your previous config.
you can read the /etc/lilo.conf file to find out what it is actually writing Steven -- SLUG - Sydney Linux User's Group - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug