Hi. My macbook is finally on a wireless network (yay!), so I'm now hooking it up with all the internet luxuries to which I have grown accustomed. I am trying to install AIM 4.7, which is the version for OS X or higher. From the aim.com website I downloaded the file installaim4.7.bin, but whenever I try to open it, it launches in the trial version of MS Excel! Try as I might, this makes no sense to me. I never would have even opened that trial if it hadn't launched itself. I'm not familiar with .bin files. All I can guess is that they are similar to .exe executible files on a PC. I tried opening it with Installer and it didn't work. I'm sure the answer is something pretty obvious (and I'm hoping no one answers with "AIM sux", because I don't think that's the [only] reason. Ha.) I'm incredibly new to macs and I feel like I was PC savvy enough to get by and now mac is almost like learning a new language...or a different version of the same language (like American English and UK English. Whatever analogy works for you...) Any input on the subject would be most helpful. Thank you!