>Not a problem at all. You just require your customers to upgrade to the latest version of the Windows OS every year... :o) Makes MSFT happy.
>
>
>>>>http://www.joelonsoftware.com/articles/PleaseLinker.html

And we are arriving to Joel's point. Who is footing the bill (Bill?)? MSFT or the customer?

It's all about experience. Accidentally, I'm listening to "Foxy lady" at this moment :).