IIS using NTLM for Novell Clients

I have an Intranet running IIS 4.0 with NTLM only. I do not want to enable Basic or Anonymous Access. I do not want to install the Microsoft Client. 1/3 of our users are Novell. Is there a utility to allow a authentication pass thru to allow these users access to the web server? Or is there a way to authenticate Novell users so they can access the web servers pages using Microsoft NTLM?