not sure if it's in the registry, but if you still have it on one of you're machines, you can go to the 'about' screen and read it from there... i.e. about visual basic 6.0 ...

Microsoft Corp. last week announced plans to synchronize future versions of its Visual Studio .Net development tools with the release of key products, including its upcoming Windows .Net Server ...

Microsoft is making three of its most popular Windows frameworks -- Windows Presentation Foundation (WPF), Windows Forms and the Windows UI XAML Library (WinUI) available under open source licenses.