[Shellow5]

It is pretty hard to do something like this in a non "hackish" manner, but I believe you could do it by getting runtime. I would recommend using a language like C++ to do this as it gets closer to the actual hardware and the network adapter.

[3 Kings]

Yeah there are a couple of methods that come to mind:

1. Use a native method to accomplish this through C or C++ (OS dependent)
2. Use Runtime (only works for linux) call like ifconfig device down.. and then other things..*
3. There is something in the registry that i can't remember (ask on stackoverflow)