Ram for that type of unit is still somewhat inexpensive, although that is rapidly changing. I'll recommend at least two things: an additional harddrive 768MB RAM odds are you need PC133 or (ick) RAMBUS. If it's RAMBUS, you are SOL. PC133 should still be fairly common, but in lower quantities.

thou and I, my friend, can, in the most flunkey world, make, each of us, one non-flunkey, one hero, if we like: that will be two heroes to begin with. (Carlyle)