Why spend ANY money “fixing up” such an OLD machine? Junque it.
To 2harddrive’s point - do NOT spend anything more than $50 on ebay! You can get new machines for $250-$399.
If you are cash-strapped, freepmail me - I’ll see what I have in the closet destined for the dustbin and donate it to your venture - no strings attached. (meaning - don’t call me... hehe)