I have a db to count the number of times we receive calls from phone numbers recorded in MCI records. The phone number counts are "bumped" up against a customer database and those customer records [with matches on the phone number in the customer record] bring up customer information including what client groups they belong to. I want to use Excel to pareto the top 20 (or so) highest volume callers for each client group. What I need is a way to discover the "top 20" callers for each of the 70 or so clients which will result in about 1400 records. How should I proceed?