Sorry but no help can be offered for such a machine.
Your options are simple and cheaper than upgrading this machine.
Go get a new machine.
I have ancient laptop with very small memory. I am running an illegal xp service pack 3 but have legal home office. Windows want me to go legal and put on vista but its just too big for my machine. What options do I have? The other thing is this pc is only floppy and memory stick!
Its an HP omnibook 6000. I just looked underneath!