Windows - Skype - Teamspeak Problems

Hey,

I run with bootcamp windows on
my macbook pro 15" 2.53 Ghz ( 2009 series ).
and when i wanna talk on Teamspeak or Skype they don't hear me. And that's strange cuz i tried it with the voice recorder of visa and it works. If i go to sounds and than recording things. And if i talk i see the meter moving so it works. I selected the right microphone in both skype and teamspeak , so that's not the problem. The microphone is an external . Not a build in .

plz help me .

PS: If i talk on skype on mac os x , it works fine.
But i need it to play my games.