Quote from FuturesTrader71:
The resolution limits the amount of information you can display on the screen. This is a very important factor because I think many believe that a 42" screen will display 6 times a 19" screen based on area.
In fact, if your 19" LCD uses 1280x1024 and your 42" is displaying 800x600, then your 19" LCD is far superior in quality of image displayed. If an LCD and DLP TV have the same resolution, then you will get the exact seem amount of desktop real estate but the DLP's characters and graphics will be much larger and might appear more blurry depending on your distance back from the TV and the Dot Pitch of the TV (usually not so high).
This is what gnome was saying above. I hope that helps you with your decision.

