well if you have the total count value successfully captured in a query this should be relatively simple to solve.
First open the form in design view and double click the gray area under the form, click the data tab and click on the recordsource line (should be 1st) click the ... next to the line, now select the queries tab and add the query that stores that count information you want. once you do that click okay and you should see a list of fields in your query in the little box double click the right field and then you can close out of that if it asks you to save say yes. then create a field open up the properties go to the data tab and pick your field from the control source dropdown list
okay that should do it, sorry if I made it to simple
Rpb