[justlurking]

The so-called "drive-by downloads" are what causes a lot of it, but also trojans inside screensavers and wallpaper downloads. I'm about ready to ban those and lock down the desktops.

If they can install software, you will constantly battle this problem.

Take all privileges (to install software, change settings, etc.) from the default user.

[Mannaggia l'America]

Take all privileges (to install software, change settings, etc.) from the default user.

It's on my list - we are in the process of converting all of the PC's to XP first from Win98. There's not much use in doing it with Win98 since you can bypass the login window.