Wireless application for files exchange between two computers,pls Help

Hi everyone,
I need your help,pls.I have to make a wireless application for files exchange between two computers,but I don't know where to start from.I guess that this should be a client/server and after establishing a connection I have to be able to exchange files between each others.Please help me

the wireless connection does not matter.
This is a socket (client server as you said) same way.
look out:
http://java.sun.com/docs/books/tutorial/networking/index.html
cya

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