Problems with Accessing an MS-Access database on a remote computer

I 'm trying to build a Web Service in a 3 tire environment with D6 + UP2

One machine that host the database (a so spoken "database server"). The
database is an MS-Access 97.
An other machine as a web server with the Web Service installed on it
and a third machine for the client application.
It keeps returning following message when I set the ClientDataSet.Active
on True:
"Project1.exe raised exception class ERemotableException with message
'The Microsoft Jet database engine cannot open the file
'\\DataServer\D\Data\Klanten7.mdb'. It is already opened exclusively by
another user, or you need permission to view its data'."

Within the server project the ADOConnection and the ADODataSet can be
set on Active := True without any problem...

Any suggestions??

Johan Lozano
Software dep.
MicroBit, Duffel
Antwerp Belgium