Second, Microsoft wants to validate the quality of third-party drivers, which have caused system instability in the past. Vendors are supposed to submit their drivers to an independent organization called Windows Hardware Quality Labs (WHQL), where they're tested for reliability. You can still install any driver you want, but in Windows XP you'll be warned if the driver hasn't been verified and WHQL-approved.

w3.ag.uiuc.edu This course is designed to familiarize you with the Microsoft Windows program. The manual you are holding is geared towards users who are unfamiliar with Windows, and therefore attempts to clearly define terms and concepts before they are used. The goal of this course is for the user to gain confidence in their ability to use Microsoft Windows, and feel comfortable using it on their own after the course has been completed.