Extends Windows XP Fast User Switching by providing a task switching like hot key of the installer's choice. This hot key allows direct switching (ie not via the XP welcome screen) and supports password saving and automatic logon. fastuserswitching
When a Windows XP user asks how to fix a problem they've recently started having with their PC my first response is to use System Restore to roll it back to a point just before the problem started. system restore roll back backup