I am selecting a component for a small computer training room we are making at my work. The room itself will be roughly 20 by 25. This unit will be used to show the screen from the instructors computer. I see it as 2 choices, either a ceiling mounted projector and screen, or I was thinking about a large (~42") flat-panel display mounted on the wall at the front of the room. I need suggestions and recommendations as to which way to go and models. Especially if I go flat-panel, what models will connect to the computer, and if possible, via a wireless connection. Thanks for all who help.