Google AdMob implementation problems

Hello,

I have tried tutorials from the GADMob wiki and random forum posts. Also from http://answers.unity3d.com/questions/34105/who-can-help-me-how-to-get-the-view-controlleruiviewcontroller-for-admob

None of them have worked for me. I can implement all the code, but when I run it in the simulator my ad never shows up. I have let it sit for hours, but nothing.

Google recently changed the admob SDK a little bit to include the "G" in the filenames, I'm not sure if they changed anything else, but one thing I know for sure is that old tutorials I find do not work anymore.

I'm using unity 3.2, working with IOS 4.2

Can anyone help?