His 35 years of business application software development provide a huge pool of knowledge from which to draw upon. He is an active participant on the Infragistics and Microsoft newsgroups and works closely with Infragistics on the design of future products and features. You can find many of his tutorials and training documents at SMatzen.com. Sam actively develops and supports many different Windows and Unix-based products, the most popular of which is described at SLM.com.