I've never set this up myself, so I can't help a lot, but I know what you're going to have to do is set up a diskless workstation (yes, linux supports it). And I know it has something to do with tftp. That's about all I know. Look at this google search and see if any of these things are what you're looking for:

http://www.google.com/search?hl=en&l...+linux&spell=1