Thanks for all the help. DVI and HDMI aren't an option for the laptop. VGA out only. Well, VGA and SVideo, but no thanks on that. I'll check the reviews on the switches you've linked for me and see if they work for the XBOX 360. I was hoping I might be able to just use a VGA cord that splits to two outputs and then just unplug either the laptop or the 360 if needed. The primary problem is that the VGA plug on the monitor is a pain to reach and I've begun using the monitor only with the 360 and not the laptop, which it was originally bought for...
-Ado