I'm trying to run Dual Monitor's off my Acer Aspire 6920 laptop. It's specs are 2.5 pentiuim core 2 duo, Nvidia GeForce 9500m GS, and 4 gb ram, and I'm running Vista Ultimate. I'm trying to hook a VeiwSonic 19" widescreen monitor to it. Everytime that i do, both screens flicker as if the signal is being lost and found constantly, until i unplug the 2nd monitor. I can use the VeiwSonic as the main monitor and have my laptop screen off without problems. Sorry for the length, but any help would be greatly appreciated. ~thanks - eric