Revert Display Driver to Previous? (not factory)

[BlackScarlet]

While setting up Photoshop CS4 they reccommended I update my display driver to use their opengl capabilities. I updated it and the opengl is having problems and won't work. Oddly, I'm pretty sure it was workign before I updated it, so how do I roll back to the previous one, without rolling back to the factory default?
I'm hesitant to use system restore because that causes such global changes that I never know what it will do. Besides, it makes deleted folders re appear empty as well as exe files. ><

 

[Tmagic650]

The rollback should reapply that last driver used before the upgrade was done, not the default (original) driver