Visible Signs of Progress

Look!  My lobby is 100% working.  My code was slightly flawed, but not bad.  As I suspected, all I needed was a working network.  I'm suddenly very grateful for my employer and my freedom to use its equipment.  :)

Upon launch, the user presses the Home key to log in with a local profile. 

The user then presses A to host a game or B to join one.

When the other player joins, his/her gamer tag is listed on the main screen.