Xubuntu, you can read more about it here plus a link to download: http://www.instructables.com/answers/What-kind-of-Linux-would-work-on-this-old-hp-I-fou/
Select as Best AnswerUndo Best Answer
I came here to say DSL as steve did, if you want something a big bigger I recommend puppy or slax (I tend to favor slax a bit more).
Damn Small Linux ?
I was looking for something a little bigger than that.
What do you want to do with it?
I want to install it on my hardrive but the problem is that I have a very small amount of ram in a fairly capable computer.
Xubuntu or Kubuntu is a good choice then. Just keep the number of processes running down.