I have embedded this video especially for those who have not invoked security on your wireless Internet network. The video steps through Windows XP choices as to how security is invoked. It would not be difficult to use the same information for Vista connections as well.

As more and more people run wireless networks at home, it is becoming more important that you use a method of securing your network against other who might get a free run at your expense. This 12 minute video provides enough explanation should you not know what wireless Internet security actually means.