I have least knowledge on network domain.Please bare with my question if it is basic

I would like to know how to communicate between two applications using "TCP/ip protocol" in "windows XP" say for example

Using Perl and TK I am building a GUI with entry widget and i have an other external application which is installed in the system say "APPLICATION.exe" and also 

how to create and set the 
1."socket handle",
2."The address of the destination in network-byte order",
3."The port of the destination in host-byte order" 
for my perl program in APPLICATION.exe and vice versa.

[download]

I need to establish the connection using "TCP" between my perl program and external application APPLICATION.exe

for testing purpose what ever I type in the GUI Entry this external application has to receive (hope it receives as bytes)and external application will send some data and i need to process that data in my perl program..

I am totally unaware whether this is simple task or complicated. If there are any modules existing in perl for similar programming please suggest me. I highly appreciate if anyone can provide me the answer with an example.

Thanks to all

In reply to Interprocess communication in windows xp by neha16

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