You need to go to download the latest RAW converters. Same thing happened to me when I got my D80 a couple of years ago.

Actually when I got my camera, I believe they had a beta version of it and the real converter wasn't available for a couple of weeks. Go to Adobe or possibly clicking on check updates in Photoshop or Bridge will do it also. It looks like 4.3.1 is the latest Raw Update. You can check your version to see which one you are on.

Ah, so much new stuff to learn...good luck.