Distributed transaction error!!!

Hi All,

I have a simple test on a SBS2003 box.  The server is called crmserver.

My T-SQL:

USE master
GO
EXEC sp_addlinkedserver 
'MYLINK', 
'', 
'SQLOLEDB',
NULL,
NULL,
'DRIVER={SQL  Server};SERVER=crmse
rver;Integrated Security=SSPI'
GO

begin distributed transaction
SELECT * FROM  [MYLINK].pubs.dbo.authors
commit tran

GO

EXEC sp_dropserver 'MYLINK'

I then get this message:


Server: Msg 7391, Level 16, State 1, Line 3
The operation could not be performed because the OLE DB provider 'SQLOLEDB' 
was unable to begin a distributed transaction.
[OLE/DB provider returned message: New transaction cannot enlist in the 
specified transaction coordinator. ]
OLE DB error trace [OLE/DB Provider 'SQLOLEDB'  ITransactionJoin::Jo
inTra
nsaction returned 0x8004d00a].

However, If change the provider to MSDASQL - it works.

I have (I think), followed the article about changing the DTC to "No Authent
ication Required" in the component services.

Could someone point me in the correct direction please?  I need this to work
 with SQLOLEDB.

Thanks Mike