OK, got it. In a query, I brought in the field that contained the data I was looking for. In another field I used "expr1: [field1] is null". That returned a boolean 0, -1 value which translated easily into a checkmark on a report. Thanks for the input.

Basically what it is is a list of all my movies/cd's. I had a field that showed who had "check out" a particular item. The field contained the person's name. If it was null, I wanted to show that it was not "checked out" Later, I wanted to be able to print out a report listing all my stuff, showing whether an item was "in stock" without having to show who actually had it checked out, since that's nobody's business but mine. And I wanted to be able to do this without having to check off a button in the lookup form. More or less it was an exercise to see how to do it, not that it was really necessary.

Make sense?