Make sure you specified the name of the font
exactly as it appears in an application menu including the same
upper and lower case letters. Font names are not case-sensitive
for Internet Explorer, but they are for Netscape.
For example, if the font name is "AdLib BT" in the application
menu, then do not type it as "adlib bt" in the HTML code. Also be
aware that spaces in font names are important, too. If the font
name includes a space, you must use quotation marks around it.
See if your Web server is configured for the
PFR MIME type. Your Web server must recognize the PFR MIME type in
order to display dynamic fonts using Netscape Communicator.
To add the PFR MIME type, follow
the instructions for your type of server.