You might need to uninstall the previous graphics drivers first, POD. Have you done that? If you are upgrading from on board graphics to a graphics card, you may need to go into the BIOS and disable the onboard graphics. Can't be more specific until we know which BIOS you have.
To upload screen shots into your posts, you have to do a screen capture, paste it into Paint Shop Pro, or whatever, save it as a jpeg, then press the Browse button (on here), find the file and click it to attach it to your post.