As others have mentioned, almost any. The main issue is memory, particularly during the install. I think you have to have 64mb for the main distros to install.
ipcop and other specialised distros like 'damn small linux' might be ok with 32mb or less. Matt -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
