Build virtual audio driver with Directsound and use with Skype?

HI all,

I am managing to build an app that allow i can build virtual audio driver
with using Directsound SDK, can ?
I also hear that DDK can allow building virtual audio drive, right?
which (DDK\or Directsound) i should use to build the virtual audio drive.

And I would like Skype also can use this driver?

Anyone can help/show me how to do these? Have sample (source code) for

Thanks all,