I have version 2003, but I use Advanced Find and the Advanced tab to specifiy my criteria. I apply a new category to the search results (select all and use the menu in the Find window to apply a category) then copy those contacts into a new subfolder of my Contacts folder. From there, I can use them or export them out. Yes, the contacts are duplicated but I usually delete the folder after I'm done with the current task and recreate one again when needed.
I don't have access to 2007 at this moment but it may work the same. I use Business Contact Manager with Outlook 2007 for a client and I use the search folders in BCM and it works wonderfully. I'll test my steps in 2007 and post my results in case anyone else runs into this.

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Caroline ~"Thoughts become things"