So I just ran across a used HP 4440s Probook that I can pick up for a song. Essentially, I'd be getting it almost free because of the bevy of MS software that is already loaded on it.
It is currently configured with 64 Bit OS (Win 7 Home Premium) with 4GB RAM and a Celeron B840. I've got an SSD waiting in the wings for it already, as well as a couple of 8GB sticks that I had planned for something else that I changed my mind on.
Quick research shows that the 4440s Probook could be configured with much more than this entry level configuration. Knowing that it came originally configured with the B840 cpu/integrated graphics ... how upgradeable is this to something better suited for running PS/LR. In other words, how far can it be maxed out?