Netscape 4.7x doesn't work on the PC either. This isn't a mac issue.
Netscape 4.7 is basically incompatible with threads because of it's spotty support for CSS... and threads uses CSS heavily.
All of my user issues were with PC Netscape 4.76.
Most websites today note that they require version 5 browsers or higher.
You might go over to Infopop Community forums and do a search for "Netscape 4.7". There have been numerous issues and lots of things suggested along the way. It's a very common issue. Maybe something that Rick or others suggested there might help your issue.
