Paul Thurrott runs the SuperSite for Windows (WinSuperSite.com), which has been described by Microsoft as the most influential Windows-oriented Web site in the world. It attracts a wide audience with its breaking stories on new developments with Windows and other Microsoft products. Paul is also the author of more than 20 books about technology and the editor of one of the world's largest-circulation e-mail newsletter on Windows, Windows IT Pro UPDATE. His other major newsletter, WinInfo Daily News, delivers the latest high-tech news five times a week, Monday through Friday. Paul is also a columnist for Windows IT Pro Magazine. 

Rafael Rivera is the blogger and programmer behind Within Windows (WithinWindows.com), a blog devoted to the technical internals of Microsoft's Windows operating systems. He is a Certified Reverse Engineering Analyst with over ten years of relevant field experience and currently works for Telos Corporation, a Top 100 Federal Prime Contractor. Rafael was the first to reveal and make available the new Taskbar and other hidden features in Windows 7, features that Microsoft had tried to lock down from testers.