Ankit,
The mailing list overall is always ready help, though they are here to help you solve a puzzle, not solve the puzzle for you. As long as you bear that in mind, this is a very helpful group.
As for the windows install, I can't easily give you simple instructions on how to install it. The difficult part is not GNURadio, it's getting all the dependencies right, and one little thing can break it.
However, my project right now is to build a set of ".msi" files that will allow windows users to simply install GNURadio with all dependencies like any other Windows program. It also has a script so that users can build it themselves. Bad news is that it is not yet ready, perhaps in a month it will be fully complete.
In the meantime, if Qt is working, I highly recommend that route, I think you will find it is a much easier change to make than starting over with your installation.