the error mesage says "myst.exe has stopped working a problem has caused the program to stop working correctly. windows will close the program and notify you if a solution is avalible."(sorry for spelling mistacs) i know my drivers are out of date but fairly recent(i am not paying 150$ to update my graphics card for a game my old xp could play easly.)
I assume you know this, but just for the sake of clarity...
Updating the drivers of your current graphics card and updating your graphics card (getting a better/newer one) are two different things.
The drivers are a piece of software that you can download (for free) from the respective site, ie: you can download the latest Nvidia drivers for Nvidia cards and the latest ATI drivers for ATI cards from the respective websites.
Regarding the error message you're getting, unfortunately it's one of those generic ones that doesn't help one bit as to what the problem is exactly.