i have a dell mini jus put Xp home ED on it and i cant change the res

Welcome to D-A-L.

You'll need the drivers for the video device.

Here is a link to Everest Home Edition (CLEAN FreeWare)

Download, install, and run Everest Home Edition on this machine. Once it's finished loading and running, click the + sign next to;

Display. Post the information listed under Windows Video (Device Description).

Go to the Dell support site, enter the service code for your mini then download all the needed drivers.

To see what you need, press Winkey+r, type devmgmt.msc and press Enter or click GO.

Ztruker probably has the better idea. I forgot/overlooked the it was a Dell machine.......