MARK F. RUSSO is Senior Researcher with Bristol-Myers Squibb's Combinatorial Drug Discovery Group and an Adjunct Professor in the School of Biomedical Engineering, Science, and Health Systems at Drexel University. He is the developer of several laboratory computer applications and robot systems and has published extensively on related topics. MARTIN M. ECHOLS is Site Manager for Combinatorial Chemistry Automation for Bristol-Myers Squibb. He has authored several software applications for automating laboratory systems.