How to start as fast as possible with TCP - IP .... ?

[Tomi B]

Hello all,

I'm using Borland Builder 4.0 (yes it's kind of old...) and I need to
write the simplest application as possible that will only send
commands through the ethernet, TCP/IP, for example commands like -

0105A90557017A

or -

0105A90557007B

Where should I begin? is there any DLL or Lib file that can help me do
that fast?

I read something about "WinPcap", can it help me somehow? how can I
use it?

Please help,
Thanks!