This is a typical brighness problem which occurs when the G2 voltage is too high, and the data stored on monitor's EPPROM the becomes corrupted. Basically, there are two fix approaches to this common problem: a resistor fix, and WinDAS fix. Go ahead and review the following forum at www.short-media.com ..."DELL P1110 TOO BRIGHT" forum. In there, you'll find everything you need to know and do in order to solve this problem. Gregua256 (P991 DELL SONY) is the absolute expert on the brightness problem and WinDAS. He is the author of a well put together "HOW TO USE" WinDAS that you can find at www.geocities.com/gregua/windas/
Also, please make sure you check
http://people.aapt.net.au/~augen/windas%20short%20media%20forums%20monitor%20fix/
Hope this helps...
Sincerely,
Luis A. Grunauer, Jr.