In addition to putting yes in the criteria, turn on the Totals options. It's that backwards E in the tool bar, epsilon I think. Then under the field name in the query, change "Group By" to "Count". You have to create another query with it's data source being query you asked about. Now, choose the field from the parent data source "CountOfYour Field Name". Turn on totals, then choose SUM in the totals line.
I don't know of any other way around having 2 queries.
Tyler