Dave, The difference is, XP Pro has numerous features that regular XP does not. That's why Microsoft charges more for XP Pro, and why a basic home version of Vista sells for less than Vista Business Premium. You are paying for additional features. JFW Pro, on the other hand, offers no additional features over the standard version. They are the same program in their source code. The only difference is the authorization. JFW standard could run XP Pro, but FS disables that capability if it sees an authorization for the JFW standard version. Alan Dave wrote: Not to be argumentative, , but MS charges extra for XP Pro, so why not FS? Dave