If you’re near Chicago on 6 July 2011, come to the Chicago Apple User Group, where TidBITS publisher Adam Engst will be speaking about Lion and iCloud, and taking any and all questions from the audience.follow link
Mac OS X Zip Expanding Utility
Firefox (and possibly other applications) may ask you what you want to do with .zip archives that you download from the Internet. If you want to expand them with Mac OS X (rather than StuffIt Expander), you may be unsure of which application actually does the job. You're looking for Archive Utility (in Leopard and later) or BOMArchiveHelper (in Tiger). In either case, the application is stored in Hard Drive/System/Library/Core Services/. Don't move it from there, though, or you'll confuse matters.
Join Adam Engst on July 6th at the Chicago Apple User Group