Few noob questions. I downloaded Adium, and I shut down my computer, now I don't know how to open it. I found the file and stuff but I'm used to Windows I don't know what to do. I obtained a copy of Photoshop, but when I tried to open it, it says... Uh, what does that even mean? Help? Oh and my mouse keeps shooting to the corners randomly, I'm guessing it's because I don't have a mousepad, but my old computer never did it, ever happen to anyone else?