You want http://sanfordfl.gov/investigation/trayvon_martin.html. Zimmerman's call is Call 1.
Thanks woody.
Call #3 is very chilling. Its a woman calling in while the fight is going on. You can very clearly in the background hear Zimmerman screaming Help me over and over. The terror in his voice is very evident. Then you hear the gunshot. WHY THE F is this not being played all over tv. This call alone should exonerate him.