That is an obvious statement.
There are many of us who wonder why gadgets would not run on XP. Because there are many of us who do not want to upgrade to Vista, for lack of sufficient reason to do so. Why buy a more expensive OS when the current one suits us fine? There are others, desktop gadgets - mentioned in my earlier posts - which do not require Vista, and can run on Windows 2000+ machines.
Power to such alternatives! May their tribe grow!