packet sending

I need to send a packet of information to a chosen IP address and port (Its to control a switch attached to my network card). I know what information to send it (I've captured the packet I need) but I have no idea where to start - could someone please point me in the right direction (maybe even a different language if its easier)

Learn about TCP/IP (buy a book), then study networking and ethernet.

Do a board search on Winsock....there are hundreds of threads with loads of tutorial links