Distributed queries

Hi,
I am trying to execute the query
select CodRicerca AS codice, PrezzoEuro,ArticoloID,UnitaMisuraID from (
select * from dbo.vArticoliBaseAggiornamentiListini where PrecodiciID=3D
36966 and ArticoliCodificheTipoID=3D 1 and ListinoID=3D
1 ) as vArticoliBaseAggiornamentiListini INNER JOIN
OpenDataSource('Microsoft.Jet.OLEDB.4.0','Data
Source=3D"W:\Clipparts\Bin\..\Data\\Listino.mdb";J et OLEDB:System
database=3D"W:\Clipparts\Bin\..\Data\\CLIPUSERS.MD W";User
ID=3Daaaa;Password=3D123456789')...[listini] as ClipListino on
ClipListino.CodRicerca=3DArticoliCodificheArticolo COLLATE
database_default where ClipListino.IdLineaProdotto=3D 959 and
(ArticoliListiniDataVigore<CAST('2006-04-04 00:00:00' AS smalldatetime)
or PrezzoEuro<>ArticoliListiniPrezzo)
But sometimes I get the error
"OLE/DB provider returned message: Impossibile avviare l'applicazione.
Il file di informazioni sul gruppo di lavoro =E8 mancante o aperto in
modo esclusivo da un altro utente."
[The translation shoul be: OLE/DB provider returned message: Cannot
start your application.The workgroup information file is missing or
opened exclusively by another
user]
It does not happen always. I get the error only in some enviroment (but
I can non find under which ).
Sometime the same query works from query analyzer, but does not work if
embedded in an application running on a host other than that running
sqlserver.
thanks in advance for you help
Massimo
After other trials, I found that the problem is on the accout connected
to the server. Some accounts are allowed to make distributed queries
but some other not. More specifically if I use the domain account the
query runs well, if I use SQLServer account it does not work
sql