you need a new cpu and video card and probably ram for that matter.
I dont think he need more RAM. I have 2GB and never falt the need to buy more, for Dolphin or anything else. I dont edit videos on my computer, tough

Quote:And I need a good one right? It is intalled inside the cpu or what?
No. A video CARD is a type of expansion card that you put into one of pci-e slots. It contains a dedicated graphics processor and dedicated video ram on the board.