Hi Ekowalow,
You may want to post this in the MS Office Live Communications
Server group (link below) as well.
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I was told that the Active Directory schema needs to be extended in order to
use Live Communications Server...is this true? What will happen if we don't
extend the schema? What functionality will we lose? >>
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LLet us know if this has helped you,
Bob Buckland ?

MS Office System Products MVP
*courtesy is not expensive and can pay big dividends8
A. Specific newsgroup/discussion group mentioned in this message:
news://msnews.microsoft.com/microsoft.public.livecomm.general
or via browser:
http://microsoft.com/communities/newsgroups/en-us/?dg=microsoft.public.livecomm.general
B. MS Office Community discussion/newsgroups via Web Browser
http://microsoft.com/office/community/en-us/default.mspx
or
Microsoft hosted newsgroups via Outlook Express/newsreader
news://msnews.microsoft.com