A right pane!

Good grief - the paint is scarcely dry on Windows Vista, and already Windows 7 is waiting in the wings. Is there no end to Microsoft's greed? I'm still happy with XP, but how long before they pull the plug on that and force me to fork out for an upgrade? What other product is there where, having bought it, you have to put your hand in your pocket every few years simply in order to carry on using it?