Screen resolution wont go over 640 x 480 and colour quality wont go over 4 bit?

I just updated my Nvidia FX 5500 drivers to the latest version, I restarted my computer and kablamo, the screen resolutions not wright. I tried increase the resolution and it let me go to 800 x 600 but then I went to 1024 x 768 and it just automatically goes back to 640 x 480. Also every time I try to change the... show more I just updated my Nvidia FX 5500 drivers to the latest version, I restarted my computer and kablamo, the screen resolutions not wright. I tried increase the resolution and it let me go to 800 x 600 but then I went to 1024 x 768 and it just automatically goes back to 640 x 480. Also every time I try to change the colour quality to over 4 bit it just changes it back to 4 bit and the resolution changes to 640 x 480. If no one helps me I will CRY!
Update: I don't know what a VGA driver is but I just rolled back my drivers in the properties menu and it fixed itself.
Update 2: still want to update my drivers so can someone send me a link?
Update 3: its a NVIDIA GeForce FX 5500 graphics card.
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