Pursuant to the original question, the following project was posted
yesterday to the Google App APIs group that may be relevant.
It is also possible (no knowledge or endorsement) that this person
would have the skills you were looking for.
On Apr 21, 2009, at 12:41 PM, Timothy Chester wrote:
> 1) Modify our authentication routine so that upon a valid login the
> code will sync an encrypted version of the password with Gmail. We
> are currently working to move our students to Gmail and have
> determined that CAS is the best way to synchronize passwords (we use
> AD as our identity management infrastructure).