client/server project

I am working in client/server project  (chatting) , clients login & logout to server frequently ,I want suficient way to know who is online and who is offline using muti colors images and hostname or IP address?
sraab2004Asked:
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gangsterbossCommented:
well one some one connect make the program send a message on a different port which in return sends one back, and  when some one goes to logoff make the program send a message, this will keep the online contacts up-to-date  
the rest of the coding is up to u
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swift99Commented:
check out the user created projects at http:overbyte.delphicenter.com
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