141 Worldwide 3COM Corporation A.B. Dick Company Abbott Laboratories ABN-AMRO/LaSalle Bank Acme Refining ADP Corporation AGCO AKZO Nobel ALCOA Allied Metal Altria American Express Bank American Osteopathic Association American Academy of Orthopaedic Surgeons American Red Cross Anixter Ann Taylor APAC Customer Service ARC Worldwide BB & T Bally Total Fitness Corporation Bank of America Banta Corporation Baxter Healthcare bioMerieux Biovail Pharmaceutical Blistex, Inc. Blue Cross Blue Shield of WI Brunswick Corporation Burness Communications Campbell Software Catalina Marketing Catholic Health Initiatives CDW Corporation CFM Direct Chase Chiron Corporation Comerica Conagra Foods Corus Steel CytoLogix DakoCytomation Delta Dental Plan DePaul University Discover Financial Diversified Agency Services Dixie Sales Company Drake, Beam, Morin Ellis Corporation Exelon/ComEd/Peco Energy Energis Resources Enesco Corporation Equity Office Properties Experian Farmland Foods Federal Mogul Federal Reserve Bank First Health Fisher Scientific Fleet Financial GE Financial Giant Foods Goodheart Willcox Publishing Griffen Pipe Products, Inc. Grinnell Flow Control Products Guidant Corporation Harris Bank HealthNet Health Resource Publishing Helene Curtis, Inc. Hewitt Associates Honda Ibbotson Associates IBM Global Financing IDEXX Laboratories Illinois Institute of Technology Immucore, Inc. InfoWorks Inspire Phramaceuticals Institute of Food Technology International Merchant Bank International Truck & Engine Corporation Invest NI Jones Lang LaSalle KGN Financial Kimberly Clark Kinko's Klein Tools Kraft Foods Laureate Capital La Salle Bank, NA. Leapfrog Online M & I Bank Magnetek Matsushita Electric Corporation Mayo Clinic McDougal Littell MED-EL Merck Meridian Bioscience Midland Bank, PLC Miller Brewing Company Misys Healthcare Modus Media International Morningstar, Inc. Motorola Newark Electronics Nortel Networks Northern Illinois University Northwestern University Ortho Clinical Diagnostics Orchard Software Palio Communications Panasonic Peoples Energy Perseco Pew Charitable Trusts Pfizer Pierce Chemical PolySystems Quebecor World Rapp Collins Worldwide Radiometer Raytheon Corporation Resource Auto Roche Diagnostics Rubbermaid Sallie Mae Sara Lee Seaton Corporation/Staff Mgmt Seneca Printing Shure, Inc. Sigma-Aldrich Research Sigma Chi Fraternity South Shore Bank SPSS, Inc. Standard Federal Bank Standard Parking Starmark Strategic Investment Group Staubach Company Sysmex TAP Pharmaceuticals Tiffany & Company Torbitt & Castleman Tribune Company Trustmark Insurance UBS United Visual US Food Service US West Communications Ventana Medical Systems Visteon Wells Fargo WestLB Westpac Banking Corporation WGN-TV Women's Economic Club Wampole Labs Wm. Wrigley, Jr. Co. Xanthan