My client needs a simple form with two fields: Name and Email address. She wants to type the Email address and then the name of person who has this Email address pop up in the Name field.

Reason for this is because she sends out Email messages to a group of customers and she receives "bounced back" Email messages due to Email address being obsolete. The error messages list only Email addresses, so she needs to base her search on Email addresses in order to find who the addresses belong to, so she can mail the application forms via snail mail.

I'm thinking of Parameter Query but I don't want my client to use queries if at all possible, so that leaves me only forms.