[AccessD] Building a search form

I am creating a FAQ database.  I have the following tables: tblQuestion;
tblTopic; tblSource; tblReference; tblRelationship.  I am trying to build a
search form that can be used to find either the Topic, Question, or Question
when the Topic is known (in other words choose the topic first then the
questions relating to that topic show up in the question dropdown.  I could
do either the Topic or Question or the Question when the Topic is known.
How do I do both on one form?
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://databaseadvisors.com/pipermail/accessd/attachments/20030312/7023b0c5/attachment.html>