beginner advice

Hey everyone. I am a complete novice. I have fooled arond with a guitar before but never anything serious. My question is this, Is there any type of finger exercise designed to toughen up the tips of your fingers? I have a problem getting good pressure on the strings without touching every other string I don't want to touch. Thanks for any advice.
scott

This one is good:
http://www.guitartricks.com/tutorial.php?input=621

thanks I didn't see that one before.