First, check your machine to see if there is another video port. If not, you'll either have to add another card or replace your existing card. You'll probably get better performance if you replace the existing card--if you're asking the question it's unlikely that you have a motherboard with two x16 slots. Thus a second card would be slower.

Set your screen down to 800x600, swap the cards and install the driver that came with it.

If you're going to add a card try to get one by the same manufacturer as what you currently have in your machine. It's more likely to play nice with the existing one than if you mix manufacturers. Note that rarely have I seen an installer disk that will correctly handle this situation. The downloaded installers generally work better. Simple versions also work better than fancy things that install more than just the driver.

You very well might have to install the driver via Control Panel > System > Device Manager. This requires a driver in standard format, something that's rare to see these days on install disks.


It's likely you won't find a card with two VGA ports on it. However, converting down from the better port types is usually easy. The only port that I haven't found an adapter for is dual-link DVI-D.

This machine has a good video card. There are 5 VGA/DVI-D/DisplayPort/DisplayPort/HDMI. I haven't found any way to use that DVI-D as it's dual-link, I've got VGA monitors hanging off the VGA and both of the DisplayPort ports. All of them work fine. I haven't tried to put anything on the HDMI port as I don't have any more desk space to put another monitor, nor do I think I would be comfortable with a wider set of monitors. I would have to turn my head too far to handle a 4th monitor.