Are you talking Netscape the browser or Netscape the application server?
If the latter, you probably have a term in your URLs somewhere which the server for some reason interprets as a keyword in its own scripting language (which I'm not familiar with, I just know it's there). Bears looking into. If the browser, well that's Netscape 4 for you. Probably the worst browser ever to see the light of day.
Please don't post the same question in multiple forums, it creates duplicate conversations and wastes the time of the people trying to help you.
There may be a better way of handling this, but without enough information to make an informed decision I'm closing this thread and anyone who wants to help should see this thread, atleast until Bear works out where it should be.