Hi Dazmatic !
Sorry for my bad English, i'm French
Are youre display drivers up to date ?
Is Windows XP up to date ?
If you update your display drivers on NVidia site you must first uninstall the old drivers Control Panel --> Add/Remove, ''NVidia Drivers'' or ''NVidia Display Drivers''.
Before downloading and installing the new drivers you must shot down all ''Download Accelerator'' and ''Antivirus Software''.
After installing restart the PC and try again.