Mr. R. Stephen Armstrong, Steve, has been the Chief Financial Officer of Patterson Companies, Inc. (formerly Patterson Dental Co.) since July 31, 1999 and as its Executive Vice President and Treasurer since July 31, 1999 and serves as its Principal Accounting Officer. Mr. Armstrong serves as the Chief Financial Officer and Executive Vice President of Patterson Medical Products, Inc. Prior to joining Patterson Dental Company in 1999, he served as an Assurance Partner in Public Accounting at Ernst & Young LLP. Ernst & Young LLP. He is Patterson Dental Co.'s Independent Public Auditor. Mr. Armstrong has been a Director of Delphax Technologies Inc. since 2000. He serves as Director of IMRIS, Inc.