FIM Synchronization Service - How to provsion a group to another object type

Hi,

i'm new to fim and use just the fim2010 synchronization engine with some rules extensions.

I have 2 ActiveDirectories and want to Provision a Group(used as Distribution list) from ActiveDirectory A as a contact object in ActiveDirectory B with the SMTP address of the Group as the targetaddress of the contact.

Can you give me a hint how to accomplish that?

Should i use the ShouldProjectToMV() Method in the rulesextension from the AD Connector of Domain A and out the Group as a Special mvtype? How do i join (what anchor to use) the Group to Domain B if i also sync normal contact objects as well?

Thanks you for your help!