Proxy 2.0 -vs- Netscape 6

Greetings:

I have microsoft proxy server 2.0 installed on a NT 4 server. I have a hybrid network of macs and pcs. I am only using the Proxy for authentication of users so they can access the internet. The problem I am having is that I can’t get Netscape 6 to work on either the pcs, or the macs.

Any ideas?

Thanks in advance.

Mike…