MLM software

[James Leone]

I'm trying to find an MLM package that has the following functionality.
        - discussion groups (with digest option)
        - integrate with db for managing accounts users
        - HTML support
        - custom headers and footers in message send within groups

Here's the catch, it needs to run on Windows platform.  Anybody know of
such a product without the licensing fees of LISTSERV?

PS. Majordomo indicated it did not have a windows version.