.NET Add-ins is not available in Associated Add-ins list of my QTP. If I open Test Settings, in that we can see the list of Add-ins, I have Visual Basic and Web only. I can Click on Modify button and can add .NET. But again if open this tab now .NET is no more available there.
Also in Tools - Object Identification, there is a drop down of Environments, in that I can see Standard Window, Visual Basic and Web but .Net is not there.

Now if I record .Net application its not able to identify the objects. And the script will be WIndow(" ") in spite of SwfWindow("").
I have allready installed .Net Add-ins and .NET Framework 1.1

Expert guidance is required.