I was looking through my old CD's and found an old file, but have no idea what is on it. The CD just has one ginormous file (~600MB), with no file extension. I am guessing the file was made on my PowerPC Mac on an early version of OS X. I no longer have the PowerPC Mac, am now using an Intel Mac with the latest version of Snow Leopard. I attempted to open it, but no app seemed to be associated with the file. When I open it as a text file, I see HTML, and then garbage (which I am guessing are pictures). My hunch is that the file is actually a bunch of files in one file. Any suggestions of how to recover the files?