Description : Are extensions on Microsoft Office 2009 for Mac different than the PC ones?
Last Answer : Extensions as in file extensions? Not to my knowledge. PC files will open on a Mac, and vice versa. the 2004 edition extensions are .DOC, .XLS. In the Current version of Office, it's .DOCX, .XLSX etc ... (Mac or PC), but not the other way around. There are programs to convert them for you, however.