iPhone ring notification on the computer
Solution 1:
As far as I know, there's no way to do that directly with a non-jailbroken iPhone. (I would love to be wrong about that, though.)
You might be able to set up your phone with a third-party service to get functionality like this. For example, using Google Voice with an app like GrowlVoice ($5). GrowlVoice can provide real-time SMS notifications, but I'm not sure about real-time call notifications.