Hi cvkiwi,
Assuming your graphics card manufacturer is still in business, then updating your video driver should be easily achieved.
What make and model is your Graphics Card?
Information also helpful to the forum to assist you to get the right updates would be the Operating System you are using with that card. (i.e. Windows 7 64bit or Windows XP Service Pack 3 etc., for example)
Typically, for Windows machines and if you are connected to the Internet, it is possible to update your drivers by simply going to "System" in Control Panel and choosing "Device Manager", then selecting "Display Adapter" from the list of devices and RIGHT clicking the name of your graphics card adapter and choosing "Update driver software..."
Windows will then attempt to find the correct driver update for you and then install it for you.
See how you go!
PC