To clarify - my computer is a Gateway450 laptop. I see no stickers or anything else on the outside of the computer stating my max resolution.

The reason I am confused is that on any other computer I have seen that does not have 1600 x 1200 capabilities, the bar under the settings tab just doesnt go that high, whereas on mine it does go up to 1600 x 1200, it just wont apply the setting.
Is it possible that a new video card would do give me the 1600 x 1200?