I feel that the wizard to create query based DL's in Exchange 2007 does not give half the functionality that exchange 2003 gave. EG where can Ipaste in a custom ldap query?

The wizard for DDG, AL, and EAP all provide the same view of "precanned" filters in Exchange 2007, designed to cover the most common filters and conditions with a straight-forward interface. If you wish to create complex/custom filters outside of the precanned set, you can use the RecipientFilter parameter at the cmdlet and specify your filter query in OPATH format. There's a bit on the syntax for OPATH RecipientFilter at the wiki already and there'll be a blog post on it in the near future as well.

Great thanks, I like the recipient container option I hope you dont mind me asking further questions about opath? 1) Where can I get more information about OPATH? 2) What about extensible matching eg LDAP_MATCHING_RULE_BIT_OR "1.2.840.113556.1.4.804"LDAP_MATCHING_RULE_BIT_AND "1.2.840.113556.1.4.803" 3) since AD also uses LDAP query, will longhorn also use this new query format?