password access2000 + ADO + DELPHI5

I have a database fact in the access2000 with signal,
I am trying to open for the delphi5 and component ado,
I already tried to pass the signal using the property conectionstring of the
component adoconection and it generates mistake, I also tried to pass the
signal in the method open of the componenente adoconection and it generates
mistake i not valid password, already using the access2000 I get to open the
database informing the same signal.
the one that I should do.