I just got a new Arduino Due, and I need to install 1.5.1r2 to program it. I downloaded 1.5.1r2 and unzipped it. There is no "arduino.exe" in the root as there was in my 1.03. There is no installer and no executable, nothing but dll's. How do I install or launch it! Also, the drivers folder is entirely empty. The file structure is there but there are no drivers present. I am running Windows 8 (!%^@).