Hey. I just had a quick question. I just got a Mac for the first time, a new Powerbook G4, and one problem I'm having is downloading files that ARE NOT .dmg. .sit files and .exe cannot be opened, because it says there is no application that can be associated with it. Does anyone know of a good program that can get that would allow me to download the programs I need? Or know what I need to do? Any advice would be welcome. I am getting completely frustrated with the whole process.