A friend advised me because of a problem that I ran across w/ Stuffit Expander to use BOMArchivehelper in its stead. . . So I searched (ver. 10.46) to no avail, so I read that BOMArchivehelper is a routine that was added to later releases of Panthergoing forward into Tiger, except that I cannot even locate it with Spotlight... So, I thought no problem I will download it from Apple.com/downloads, right? Wrong. Now, I am at that point where I am actually considering "Archive & Install," but I really think that is just to much work to gain one program, I need help.😱zz5@mac.com
BOMArchivehelper isn't a program you invoke directly. It probably is there, just hidden from you (it's located at /System/Library/CoreServices/BOMArchivehelper).
To use it to compress files, choose File > Create Archive of <selection> in Finder. It's used by default to uncompress zip files (by double clicking them), but if your settings have been changed you can reset them as follows:
Select a zip file in Finder
Choose File > Get Info
In the "Open with" section choose BOMArchiveHelper. If it's not in the list choose "Other" and find BOMArchiveHelper at the path mentioned above