I just did this to my own setup. First, you need to check and see if your video card is compatible. If you are using any newer model NviDia or ATI card, then it should be. Second, you need to get a hold of a VGA to DVI adapter. You will plug your primary monitor into your VGA slot and your secondary one into your DVI slot. Plug in your second monitor, then go to Display Properties, click settings and then select your secondary graphics adapter. Then, check the box next to "extend desktop onto this monitor," click OK, and whalah.