Every time I open up a web application in Visual Studio, I get the
following error message: Visual Studio .NET has detected that the
specified web server is not running ASP.NET version 1.1. You will be
unable to run ASP.NET Web applications or services.

Not surprisingly, I'm unable to run any of my ASP.NET web applications.
Every time I try to open one of my application's web forms in IE or
Firefox, the browser wants to open the file with Visual Studio, which I
think is symptomatic of the ASP.NET engine not bothering to generate
the appropriate web pages dynamically. However, I believe that I do
have ASP.NET 1.1 installed -- it's listed (along with ASP.NET 1.0) in
my Add/Remove Programs control panel, for example.

Does anybody have some ideas of how I can get my applications running?

Thanks a lot,

Jay