I dunno about it exactly. But VB is a old language. Now VB doesn't use. After VB 6 they mod it to VB.net !!!!!! Now u can use .NET !!! It's coding like VB.
Its about the time you changed to VB.net . Personally I don't like VB cos the language rules are too flexible therefore most VB code is unstructured and unorganized. Better if you move to C#.net instead...
Anyways, as for your original question : Visual Basic 6 runtime will be supported on Windows 7, therefore applications written in VB6 will still work on W7, but I don’t know if you can install Visual Studio 6 and develop VB6 apps on W7.