Thank You. I went from 10.6.4 to 10.6.5 using the method you described. I have a Dell Latitude D620. It still does not solve my monitor turning off the second my Snow Leopard boot. I use an external monitor. Can someone assist. I will try to upgrade to 10.6.6 and report back if it works.
Upgrade from 10.6.5 to 10.6.6 failed. Is there another sleeper kext I can use ?