Windows 7: Need driver to change laptop screen res to wide.

Hey guys I just installed windows 7 and I absolutely love it if only I could resolve one issue.

I have a Dell Latitude D800 laptop which is some outdated but served me well with vista. The native screen resolution is 1920x1200, and if I understand correctly the nvidia chipset is GeForce FX Go5200.

I don't need to install the native driver if I could only change the resolution to custom since nothing else appears to be not working.

The problem with the natural drivers is this: when I install the nvidia one it says I do not have a compatible chipset, so it leaves me with the D800 video driver. It has only been released for XP and installing it even with changed compatibility mode freezes my screen on startup.

In Vista no drivers were needed I just changed my resolution to 1920x1200 and all was well, what are my options in Windows 7?

Help much apriciated.