>How will users of the Internet be able to instantiate web sites created using Visual Studio .NET? Will they not have to have the Dotnetfx.exe file installed?

I'm not sure what the question is here. If someone browses to your web site, and the web site uses ASP.NET, what will the client need? An HTML Web Browser.

>We are using ASP (Visual Interdev 6.0) to accomplish our corporate requirements, one of which is "No external files are allowed or required to run an application. Everything will be done through I.E." That will have to change without question. The Internet users are of concern to me. Any advise would be appreciated.

Why should that change?