Peter G.Viscarola is a founder of and a Consulting Partner at OSR (Open Systems Resources), the world-renowned consulting firm specializing in Windows NT systems internals. Since the release of Windows NT, he has designed or developed more than three dozen Windows NT drivers, including drivers for almost every type of programmed 1/0 and DMA device imaginable. Peter is the developer and chief instructor of OSR's Windows NT Kernel Mode Device Driver Seminar. He attended Columbia University, the University of Michigan, and Lesley College. Peter is a regular contributor to, and columnist for The NT Insider, OSR's journal of Windows NT systems internals. He is a Senior Member of the IEEE and a voting member of the ACM. W. Anthony Mason is an internationally recognized expert in file systems technologies. An OSR Consulting Partner, Tony Mason is an expert on NT's Memory Manager and Cache Manager subsystems. Tony also has considerable experience designing and developing Windows NT device drivers. He is the architect and implementor of OSR's File System Filter Driver and File System Driver Development Kits. He is also the developer and chief instructor of OSR's Developing File Systems for Windows NT Seminar. Tony received his Bachelor of Science degree from the University of Chicago, where he studied mathematics and computer science. He is also a regular contributor to The NT Insider, OSR's journal of Windows NT systems internals.