http:/ / www.blackviper.com/ WinXP/ servicecfg.htm
Since not all XP services are up-to-date after the install of Service Pack 1a (and since many services can pose an unnecessary security risk anyway), download a copy of Black Vipers Windows XP Services Guide. The guide lists many services found under Windows XP, how to disable them, and several profiles to help users select what they do and do not need.
