I don't know if this was addressed already... but you don't want to try XP unless you have at least 64 MB of RAM. Even then, it is very slow - also MS recommends 300MHz processor or better. W2K might be a better option for older systems.
(hide) If you only look at some of the discussion boards on a regular basis you can add them to your favourite boards list by going to the Board page and clicking "Add to my favourite boards". (pauloaguia) (show all tips)