Question : having trouble mail enabling security groups in Exchange 2007

I am not really sure if what I have going on is lack of knowledge or something setup incorrectly, but I have a Global security group called Finance in AD. I want to mail enable that security group as an Exchange 2007 distribution group.

From EMC, Under Recipient Configuration I right click on Distribution Group, click on New Distribution Group, Click on create distribution group for existing group, click on browse, (it puts me in a section that shows all built-in exchange accounts plus schema admin), there is nothing left to do but click on Scope, Modify recipient picker scope, view all recipients in specified ou, which points to mydomain.local, I then browse down to the ou where all my security groups are located including finance, click on OK twice and end up with a screen that says "there are no objects to select"

Naturally, if I try to manually create a distribution group it says I can't because a group already exists withi that name. (even though it is a security group)

Any help would be appreciated, thanks,

Answer : having trouble mail enabling security groups in Exchange 2007

Yes - You could do ir in 2003 but Exchange 2007 has changed the rules again:-
this id from http://technet.microsoft.com/en-us/library/bb125256(EXCHG.80).aspx

"Mail-enabled non-universal groups   These are Active Directory global or local group objects that are mail-enabled. In Exchange 2007, you can create or mail-enable only universal distribution groups. You may have mail-enabled groups that were migrated from previous versions of Exchange that are not universal groups. These groups can still be managed by using the Exchange Management Console or the Exchange Management Shell."