I have never owned a tablet PC before or used an external monitor, but I think I am about to do both. The small size of the tablet is perfect for traveling, but when I'm at my apartment I want the luxury of viewing my screen in full 21-22" LCD glory.

My concern is, when I go between the slate and laptop configurations of my convertible tablet, will my external monitor need the ability to physically rotate between landscape and portrait view to compensate? For those using a tablet with an external monitor, how do you handle this situation? While in slate/portrait mode on the tablet, is it possible to have the external still set to landscape and everything look normal?