arduino+ping+auto dialing program

Hello all. I want to hook up my arduino to either an auto dialing program, or skype, to trigger an automatic phone call when sensed by a parallax ping sensor. I'm guessing I need some kind of intermediary program to allow the arduino to talk to other programs, but really have no clue as to which one I would use. I am really new to this, any feedback is greatly appreciated. Thanks.

So, you need something to GoBetwino your Arduino and your PC.