Graphics upgrade

I sincerely apologize for the inconvenience, but as weird as it sounds, I do not have telepathy. You are going to have to post up your computer specifications in order for me to help, including the power/brand of your PSU.

If your old card was a 9800GT than a 460 should be compatible and run fine, but without providing more information we can't say for sure. Could be some unknown we don't currently know that would prevent it from working.

You might also want to check how much space you have in your casing, video cards got a bit longer since the 9800 GT.