[Major Johnson]

If my driver and resolution suggestions don't work, you might try restoring your o/s (operating system) to a previous date, like 2 months ago, the last time the game worked. Since you are using XP, you have that option. Just click on Start\Programs\Accessories\System Tools. In there you will see System Restore. You won't lose any data files, it just puts the operating system configuration back to a different date.
Good luck.