Hello, I'm trying to use Samsung 26-inch LCD TV (LNT-2653H) as an external monitor for my MacBook. The TV has VGA (D-Sub) port for PC connection. I used mini-DVI to VGA adaptor and VGA cable to TV. In MacBook, the OS X automatically detect the TV's resolution such as "Samsung 1366 x 768" -- the optimum resolution provided by Samsung. So, there's no problem to detect the TV from MacBook. However, when I press the "source" button of TV remote to select the PC connection, it does not happen anything. Basically, TV cannot detect the video signal from MacBook. When I tried to connect windows PC to the same TV with VGA cable, it works with no problem at all. Anybody can help me?