Michael,
Welcome to Apple Discussions.
Since you have not provided any information about your computer or your system, I can only guess that you might have OS X 10.4 Tiger.
Mac OS X 10.4: Where is StuffIt Expander?
Allume StuffIt Expander doesn't come with Mac OS X 10.4 Tiger.
But Mac OS X 10.4 Tiger lets you compress and decompress archive (.zip) files that work with both Mac OS X and Microsoft Windows.
If you'd like to use StuffIt Expander too, for example, to open .sit or .sitx compressed files, you can download it from the
Allume Systems website.
If you intend to continue using Apple Discussions, I recommend that you update your
Preferences with your current OS and computer configuration.
;~)
