Warning, the modules are archived in "tar" format, so you will need Stuffit Expander 4.0.1 with DropStuff 4.0 with Expander Enhancer to extract them from the archive and decode and decompress the modules.
For automatic extraction in Netscape, you must use the "General Preferences..." command in the "Options" menu, then click on the "Helpers" tab, and look for the "Unix Tape Archive" file type (the corresponding MIME type is "application/x-tar", the filename suffix is ".tar"). Edit this type and modify it : choose the "Application" radio-button, and click on the "Browse" button to select Stuffit Expander (v. 4.0.1).