Thanks to all who responded: I recommend that the ZOPE installation instructions at: http://www.zope.org/Download/Installation/Binary be changed from: "...On Unix: untar Zope ./install -u edit access ./start ..." to something like Doug's suggestion:

The Linux download is a tar.gz file. To look at what files exist (a good practice to check directory structure and as a security precaution): 'tar -tvzf Zope-1.9.0-linux2-x86.tar.gz' To uncompress and extract the files: 'tar -xvzf Zope-1.9.0-linux2-x86.tar.gz'

I was "thinking inside the box" by assuming there was UNIX: tar and untar as there is in the DOS world: zip and unzip. -bobo connor