The DDK is available from Microsoft. It comes as part of the MSDN subscription. I am not sure if you can download it without a subscription nor whether it is available alone. Try searching for DDK on www.microsoft.com[^] Hope this helps you out. Ant. I'm hard, yet soft. I'm coloured, yet clear. I'm fruity and sweet. I'm jelly, what am I? Muse on it further, I shall return! - David Walliams (Little Britain)

That would cost you about $200. I don't think the DDK itself is downloadable without a MSDN subscription. The DDK reference however is available for everyone, like the content of the MSDN CDs. I was also looking for the DDK to make a device driver for a virtual webcam, but I don't have any tools either to make device drivers.

DDK(Device Driver Kit) has a lot of help and samples regarding this. There is no spoon. mail