Wow, heres the deal. You need to buy motherboards with compatible socket and CPU types. Also, you will still need to buy new ram for it, your current won't work in it, and if it does, it will be so slow that you won't even notice you have new components. You're also going to most likely need to upgrade your powersupply to run all of this, it will pull alot more then your current setup. Depending on your current case, you might need a new one, to fit an ATX motherboard. You also will probably have to get new drives, as most current motherboards only support a max of 2 IDE devices and I suspect your optical drives and harddrives are all IDE. As for the video card, you might not even be able to put one in your current computer, depending on if the motherboard has a PCIe x16 2.0 port, which I'm willing to bet it doesn't. So you might as well build a whole new computer. That's just the bottom line. Even if you can put a new video card in your current computer, it would just be so bottlenecked by the other components it wouldn't make a difference. Plus, you will need a new PSU to power it most likely.