Just thought I would give you all a quick trick when using the Windows Phone emulator. Normally the emulator only takes input from the on-screen keyboard. To use your keyboard instead (which can be a huge time-saver) press Pause/Break key on your keyboard (Page up will also work). To enable on-screen keyboard again just press Pause/Break key again (or Page Down).
For more about the keyboard in the emulator, see http://msdn.microsoft.com/en-us/library/ff754352%28v=vs.92%29.aspx