OK ive only been in this shit 3 days so im no expert . . but u make me feel like one! jk
So anyway, forget about the setting up a pool thing for starters IMO, just get some ati cards for starters if you can, even one, like a 5830 or something. lose those nvidias, its not the kind you want if you can avoid it.
Setting up a pool takes a hosted server, a dedicated linux geek at least one, and more shit thats doesnt happen in a athlon 1500.
Just start chunkin away mining man, unless you got bank then you could recruit a pool team and rent a hosted server.