How do I create a distribution list of external conatcs in Exchange for Small Business Server?

I have a user who has created a "Firends" distribution list in her Outlook 2007 contacts, it contains approximately 50 external email addresses. The user wants to:
Be able to edit the distribution list.
To share the distribution list with only 3 others.
The 3 others should only be able to see that distribution list and not the rest of her contacts.
These 3 should be able to send an email to this distribution list
No one else (other than the specifed 3 people) should be able to see or email this list

Do I do this at Outlook client level? Or Exchange level? They run Exchange as part of Windows Small business Server.
Do I need to create a new group in AD called "Friends", then create the external addresses as Contacts in AD and then add them to this new group "Firends"? Or is there a better way through sharing just that distribution list on her contacts.?
I am not sure on how to go about this
Deon_SAsked:
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Brad HeldCommented:
Creating an OU with all the contacts and then a distribution group for those contacts would be the easiest way to insure if a change is made then everyone has a valid copy. You can also limit who has the ability to send to the list.
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cedarghostCommented:
First, make sure the list is in her contacts folder. If it is in the personal address book you will have to move it by opening a new email and adding the list to the "to" field. DON'T send the email. Right click the list in the To field and select "Add to Contacts".  To share it:
1. Open a new message
2. Under the Insert menu select Item
3. In the Look In menu select Contacts
4. Choose the list an select OK.
The list will now appear as an attachment. You can send it to whomever you want to share it with.
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cedarghostCommented:
First, make sure the list is in her contacts folder. If it is in the personal address book you will have to move it by opening a new email and adding the list to the "to" field. DON'T send the email. Right click the list in the To field and select "Add to Contacts".  To share it:
1. Open a new message
2. Under the Insert menu select Item
3. In the Look In menu select Contacts
4. Choose the list an select OK.
The list will now appear as an attachment. You can send it to whomever you want to share it with.
0
vpetersenCommented:
I would share the contacts list in public folders myself. Easier to manage than any of the other solutions.
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Deon_SAuthor Commented:
Ended up sharing the Contacts thorugh Public folders, which worked perfectly
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