Can't select Launcherpro on RAZR M

[egildone]

I installed Launcher Pro on my RAZR M and it would ask me to choose the original screen or Launcher Pro when I turned it on and asked if i wanted to do this just once or always. I inadvertnantly selected home screen always and now I can't select Launcher Pro. How do I change it back to choose between the home screen and Launcher Pro.