[AccessD] Dcount dates

Hello to the list,

I am trying to supply a value to an unbound text box on a report.
The following works fine:

=DCount("ParticipantsID","tblParticipants")

But I need to have the criteria set to where the field "Date Signed", is
during a certain month. Say all who signed during Feb 2010.

I can't seem to do this. I tried some variations using Between and #s, am
brain dead now.

Tia

Bob Heygood