AutoCAD 2009 has a brand new interface, kind of. You can quickly and easily get back to the old interface too. It's just a Workspace away!
There are 2 pretty quick methods to do so.
1) In the bottom right hand corner there is a Gear button right next to the Lock button. Click the Gear button and select AutoCAD Classic.
2) Click the big red A in the upper left corner and it should dropdown a menu, select Tools->Workspaces->AutoCAD Classic.