CDO Exch 07 and Outlook 07

Migrating from Exch 2003 Outlook 2003 to Exch 07 and Outlook 07

Have a LOB app that facilitates booking resources created as Calendar
enabled Public folders.
Am currently replicating the PFs to Exch 07 and have a legacy machine still
on Ol 03 for the task, but will need to migrate to )& fully in a couple of
weeks max.

Is there a way to get CDO to work with Exch 07 and Outlook 07 or do we need
to get the whole thing re-coded ?
If re-coding, what do we use to access the 07 PFs ? ( links ? )

TIA

--
Henry Craven {SBS-MVP}