640 by 480 is very basic as far as resolution goes and almost any video card should support it with or without the most recent drivers. Just to be on the safe side... look on the card and post the FCC ID number so that we may conclude who made this particular card and where to find the most recent driver. Then after you've downloaded the driver just install it and you should be able to access that particular resolution. Most drivers come with a readme.txt file that will explain the correct procedure for installing the driver.
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