Micrsoft DNS VS. BIND

Hi,

Here is my situation,

Im installating a webserver running Windows 2003 Server Web edition.

I need a secondary DNS and a SpamAssassin server. Obviously, linux is better to host these services cheaply.

Is it possible to replicate a Microsoft DNS (no AD) into a BIND server?

Any hints and procedure would be greatly appreciated.

Thank you and have a nice day!