Just as a quick note, linking to pirated software is against the forum rules.
Also, is there a particular reason you're using file compression to begin with? In my experience, compression is only really relevant if you are either moving a large group of extremely small files (more convenient to choose a single one-meg file than a few dozen few-kilobyte files, during an FTP transfer for example) or if you're grouping something.
Though, I'll be honest if you're using system 7 or newer it may make more sense to get Disk Copy 6, which is available online (also on macworld/macaddict CDs and on Apple's old software page) and use that for grouping.
Another thing you may do is set up netatalk, which in my experience over the several years I've been using it flawlessly allows system 7 and modern Mac OS X systems to transfer files.
Also, is there a particular reason you're using file compression to begin with? In my experience, compression is only really relevant if you are either moving a large group of extremely small files (more convenient to choose a single one-meg file than a few dozen few-kilobyte files, during an FTP transfer for example) or if you're grouping something.
Though, I'll be honest if you're using system 7 or newer it may make more sense to get Disk Copy 6, which is available online (also on macworld/macaddict CDs and on Apple's old software page) and use that for grouping.
Another thing you may do is set up netatalk, which in my experience over the several years I've been using it flawlessly allows system 7 and modern Mac OS X systems to transfer files.