I have started my Google Adsense Account and got approved at the middle days of March 2008, wasn't taking the whole thing seriously until I felt the charm and the great feeling of achievement and happiness Making Money with Adsense.
After satisfying the Adsense PIN requirements (10$) almost at the 1st days of April, the process of waiting for that piece of paper from Google has begun! as the Post Office here may not understand that Paper and as the main Address is the Postal Code only (not including the P.O. Box as a main field) I've told them previously about what they are going to receive and how it looks like so they would know it's mine and put it in my P.O. Box!
check out the Adsense PIN Code Photos and how happy I am here: