How to setup a Network?

ok, simple problem. add a network card, an internet router, and a few wires. no prob. now, the interesting part. I need to know what programming language would be best to create a network, not through network cards, but through the internet. I basically need to make my a program act as a network card, and have the network stuff go through that to a computer anywhere else that i setup this program on. I'm not asking where i can get such a thing, because i can't. i know cuz i've been looking for long enough. but what programming language would you people suggest i try making this with? If you don't have any clue what i'm talking about lemme know and i'll see if i can't provide better details.

How to setup a Network?
C is probably the best for something like this but if your new to programming then id suggest C++, or Java. If you know what your doing and want more variety then try APL.
Reply:Read MSDN
Reply:trying like setup the network on the program basically run the cord through the cable modern thing...wait no set up the i dont remember what that thing is called.what kind of internet or network card do u have????