I've got my USB DVB-T antenna up & running. Also I've got Me TV installed, and I can watch a channel. My problem is that i don't know how to (supposing here it is possible) change channels: I don't see any buttons to do so, and the arrow keys don't work either. Me TV did find several channels, though, so I should be able to watch them.
At the bottom of the screen there is a small line you can drag up, opening the full tv programs schedule, which allows you also to switch channels