It's been a long time since I looked at DropMyRights, a little tool I wrote forever ago to lower a user's privilege level on versions of WIndows prior to Windows Vista. Michael Horowitz has just posted a couple of blog posts about DMR stating that everyone on Windows XP should use the tool. The articles are at and

Remember, this tool is not needed on Windows Vista or Windows Server 2008, because by default users are not administrators.