I have McAfee Internet Security Suite 4.0 installed on my PC running Windows XP Pro with SP1. McAfee claims this program is designed for XP. The program works for my profile (the 1st administrator) but gives error messages "Missing Virus Data Files" when I create and login as another account even though that user is set up as an admin. I have tried working with McAfee, but they were no help. The problem is so bad that it is impossible to work under any other account other than mine (which I do not wish to share). Help is greatly appreciated.