Winsock Kernel Questions

[ojfahoum]

I have a couple questions about Winsock Kernel.

1) Is there an actual driver that corresponds to Winsock Kernel, like tdi.sys for TDI? Or is it implemented in the transport drivers? Maybe the transport drivers and the kernel? I can't find it so far.

2) Is WSK an overlay on top of tdi.sys? Or a complete replacement?

3) Is tdi.sys used at all? I.e. if I deleted it, would Vista continue to function?

Thanks in advance for any help!

Omar