Mozilla Suite printer problems

Does anyone know if there is a file, or library, installed with Mozilla 
and Netscape that handles data that is to be sent to the Mac OSX printer 
dialog?

I ask because a friend with a MacOSX, running Tiger, says that after he 
installed Mozilla he found that the print function ceased to work, but 
only in Netscape and Mozilla apps.  He says that his print function 
works fine with All other apps he's tried.  He's tried all the usual 
uninstall/reinstall procedures, but to no avail.

I can't help much because I work out of a Windows box, however in 
general, it sounds to me as if the program that formats and sends 
Mozilla/Netscape's print data to the Mac print function has broken. 
Perhaps, if that is handled by a separate file, and it was replaced by a 
working copy, his problem would be solved.

Anyone out there know what might be going on?

Jonathan