• Abbott Laboratories

• ABN AMRO/LaSalle Bank

• Ace Hardware Corporation

• Acosta Sales and Marketing

• ADP

• Advanced Drainage Systems, Inc.

• AFLAC

• AIU Online

• A-Korn Roller, Inc.

• Aldi Inc.

• Aldridge Electric, Inc

• Allendale Association

• Allied Insurance

• Allstate Insurance Company

• Ambitech Engineering Corporation

• AMCORE Bank, N.A.

• American Academy of Pediatrics

American Express Financial Advisors

• American Marketing & Publishing

• Archer Daniels Midland

• Audit Bureau of Circulations

• Bank One Corporation

• Blains Farm and Fleet

• Calamos Investments

• Canon Business Solutions

• Capital Fitness

• Caremark

• CDW

• Central States Funds

• Chicago Police Department

• Cintas Corp.

• Coleman Cable, Inc.

• Con-Way Logistics

• Dade Behring, Inc.

• DaimlerChrysler

• Distinctive Business Products

• Enterprise Rent-A-Car

• Exel

• Experian

• Farmers Insurance Group

• Fastenal Company

• Federal Aviation Administration

• Federal Bureau of Investigation

• Federal Deposit Insurance Corporation

• Federated Insurance Co.

• Finish Line

• First & Main, Inc.

• Floor Covering Associates, Inc.

• G&K Services

• HCR ManorCare

• Heartland Home Finance

• Hershey Foods

• Hertz Corporation

• Hoopis Financial Group

• Household International

• Humanscale Corporation

• Illinois Auditor General’s Office

• Illinois Department of Children and Family Services

• Illinois Employment and Training Center

• Imagetec LP

• Impact Networking LLC

• Integrity Financial Services

• InterCall Inc.

• Internal Revenue Service

• Jackson National

• Jewel-Osco/Albertsons

• Karabowicz & Associates

• Kerasotes Theatres

• Lake County Sheriff’s Office

• LML Technologies

• Majestic Mortgage

• Marshall Field’s

• Medline Industries, Inc.

• Menards

• Men’s Wearhouse

• Midwest Technical Inspections, Inc.

• Minarik

• New Millennium Mortgage Corporation Loan Officer/ Processor

• Newspaper Services of America

• Northern Illinois University

• Northwestern Mutual Financial Network

• Oberweis Dairy, Inc.

• OfficeMax

• O’Malley & Associates

• Onsite Companies, Inc.

• Pella Corporation

• Philip Morris USA

• Primax Recoveries

• Primerica Financial Services

• Proactive Worldwide, Inc

• Product Development Technologies

• Progressive Insurance

• Prudential Financial

• Pulte Homes Corporation

• Quill Corporation

• RadioWorks, Inc.

• Rockford Products Corporation

• Romano Bros. Beverage Co.

• Rosecrance Health Network

• Ryerson Tull

• Sherwin-Williams Company

• ShopKo Stores Inc.

• Steak N Shake, Inc.

• Stryker Leibinger/Navigation

• Systemax

• Target

• TDS Metrocom

• TRC

• U.S. Army

• U.S. Peace Corps

• U.S. Securities and Exchange Commission

• Uhlich Children’s Home

• United Parcel Service

• Von Maur

• Walgreens

• Wallace Computer Services, Inc

• Wells Fargo Financial

• Wells Fargo Financial Acceptance

• Western-Southern Financial Group

• Zurich North America