Bill,

>Walter, .NET uses Windows, so by definition, Windows had to exist before .NET.
>Could Windows be rewritten in .NET?
>Hmmm good question. Anyone out there know the answer?

In VFP, many of the tools and designers were written in VFP itself. I don't see why it would be different for Windows. Sure the core (kernel) needs to be written in C/C++/Assembly, but the user interface can be written in anything that runs on top of that.