Pat is using a Dell XPS9000 and he wants to connect it to a 27" Viewsonic monitor. Leo says that it should work, but depends on if the video card supports the resolution on the monitor. He should find out the highest resolution that the video card can support. If the monitor has a higher native resolution than the laptop can support, it won't work very well. If the computer is capable of it, and it's likely that it can, then he should be fine.