Homebrew PCBs

I downloaded and am trying to use Eagle CAD program for my first board. I went to
http://www.sparkfun.com/commerce/tutorial_info.php?tutorials_id=109 and did the little tutorial they have there for a serial to USB
adapter since it looked pretty simple and the free Eagle will handle small stuff.

The problem I am having is in the board layout. I am wanting to do this board as a single sided board and eagle keeps auto routing
as a double sided board.

I have looked into the help file and can not find out how to tell eagle I want a single sided board layout. It doesn't seem to be to
intuitive so I am thinking there is a setting somewhere to do this, but where?

Does anyone use Eagle who can help me out with this?

Bob AD5VJ