I received a demo disc from a magazine that is devoted to Macs and decided to try it last night. However, when i tried to unzip the file, it said stuffit expander quit unexpectedly but didn't harm the files or computer. Does this mean that the cd is bad (first time trying to unzip something), or is my Stuffit Expander corrupt? Please let me know. I'm an apple Noob, and can anyone recommend any books for getting to know the Apple OS? Thanks!