For a few users this works, you'd have to uncheck "Automatically update
e-mail addresses based on recipient policy" on the Email addresses tab of
user's properties in ADUC.
For changing everyone's email address, simply change it in Recipient Policy.
http://support.microsoft.com/?kbid=822447

Signature
Bharat Suneja
MCSE, MCT
www.zenprise.com
blog: www.suneja.com/blog
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> Greetings
>
[quoted text clipped - 8 lines]
> Thanks
> Steve the munkey