hi may be i ask this question befor but i did not get a good reply.
i want a socket library that help me to send and recieve packet
and deal with them simply like PacketX library.
but the problem here is that the application that i want to write must work in Standard Dos and i use Borland c++ and my os is win 2000.
so if there any library that help in that i will be so thankfull, and i am so sorry for writing so much.

have you read these google links? MS-DOS is nearly extinct so you will probably have a very difficult time finding socket libraries for it.