Mark Wilkins (Ontario, Canada) is a course director and technical instructor for Data Tech Institute, a provider of technical seminars and video-based training materials to most Fortune 500 companies. Mark has contributed and co-authored Bulletproofing Netware (McGraw-Hill, 1996, 0-07-067621-6) and Windows 95 Registry for Dummies (IDG, ISBN: 0764503596) and has created videos for his courses on the NT Registry and System Policies.