AFAIK, there are _no_ standard Pc implementations of TCP/IP for DOS. 
 Windows has Winsock, which has defined a standard, but all DOS 
implementations must have software tailored for the specific TCP/IP stack.
>- Is there a Tk for PC ? (Otherwise I will use stdwin)
I wasnt even aware that stdwin has been ported to DOS!
>- Is there a way to freeze a python utility in order to minimize
>  the required memory ? (Otherwise my PC explodes)
It certainly should be possibly to build a smaller version of Python for 
DOS. Alternatively, you could use one of the 32bit DOS extenders, to give 
total access to the full machine memory.
Mark.