I want to upgrade my old pc (desktop;2008 model) and would like to add more ram, get a new processor etc. The motherboard is Foxconn n12325 and 1 gb ram. (ddr2) i saw that one more free slot is there for ram. Please tell me, how do i find out which ram is compatible with my motherboard? Also can I add a 1 GB graphic card to my pc? Thank you.