Microfone not working!!

Hello,
my microfone is not working. i disabled the audio devises in the recording tab, in sound, in the control panel. iam running windows vista. i disabled the audio devises because i couldnt talk in skype and i thought if i disable it and then enable it again it might work but when i disabled the devise it was delided and now there it says that no audio devises are installed. does anyone know how can i install the audio devices in there so my microfone can work?where can i find them so i can install it again? any help would be appresiated. thanks.