I'm using my MacBook Pro with my LCD TV but I'd like to be able to run it off the TV only (so not the laptop display) with the lid open all the time. The reason is that with the lid shut the wireless Internet access is severely weakened (despite the indicator in the menu bar showing full or nearly full signal). I know this because the download speed drops dramatically with the lid closed to around 5 kbps when normally it's stable at 250! On Windows I use it with the lid open but external only because the NVidia driver has that option. If I watch a download happening and close the lid, the rate instantly drops like I described above. Does anybody know of an application or Terminal command that can disable the built-in screen under Mac OS X (10.5.4)? It would be tremendously helpful. Oh, and I doubt it helps, but in case anyone is wondering my external LCD is a Sharp 45" LC-45GD1E high-def television. Thanks in advance.