For anyone using the 10.80 drivers with GF2 cards along with the "Overlay Enabler," I just wanted to mention that when I open the OpenGL section of the Geforce2 Display properties and make any changes, the registry setting that the Enabler adds is disabled (changed to 0 instead of 1.) In other words, the drivers are automatically disabling the setting just by "Okaying" the OpenGL properties. When this happens, you can simply reapply the Enabler to get it back, but I figured that most people might not even realize that it had been changed.
I haven't tried this with any other drivers, so I don't know whether or not it's unique to the 10.80's or not.
Larry