hosed installation - starting over

[Peter <facetious_nickname@hotmail.com>]

I've somehow completely hosed my Debian stable system, and I don't seem 
even to have a 'base-config' package any more. It boots, but no X 
server. Also, I don't have a working CD-ROM. Where do I go from here, 
presuming I want to install stable?

Thanks much!