RT's email configuration

Hello,
Ive been poring over the archives looking for something like this and have so far not found one. I got rt installed already. We here have a mail server (mdaemon running on windows 2000) already setup. I need to know some way of using that. There is a way of configure sendmail but im really hoping someone can either point me to a howto for that particular situation or step me through that. I really dont want to have to learn sendmail also just to get this program working.

-Karl Pietri