Hi, I am thinking about getting a very cheap vostro or inspiron. Cpu and ram are good, the only thing i am worried about is that I might need more hdd space later, and a better graphics card. Since I am short on money right now, I was thinking if I can just get 80GB hdd and the GeForce 8400 GS for now and later sometime upgrade. Is it possible to upgrade either? If not then is there any good laptop around 500-600 range that is upgradeable?