If you're running LINUX, or are using GNU sed, this will work as well. Unfortunately, System 5 UNIX sed and IRIX sed can't deal down on binary files like GNU sed can.

Make a file called "sed.in" that contains:

s/noframes/noFrames/g
s/frameset/frameSet/g

Now use this command to modify netscape:

% cp netscape netscape.orig
% sed -f sed.in < netscape.orig > netscape
% chmod +x netscape

Changing just one letter in each string works because Netscape downcases the incoming tag before doing an exact string compare to the stored tag with strcmp().