Server-Client applicatiopn in Delphi

[BSA01]

My teacher asked me to try make some small server-client application. I am new in delphi so I need some help.
I done this in VB6 and know what to do, but in Delphi is not so simple.

I created two projects, in one, I used tcpServer, in 2nd tcpClient.
I need some help about making :

Start listening,
Connect (Accept connection)
Exchange text between this two.

[TDQWERTY]

check those:
http://www.devarticles.com/c/a/Delphi-Kylix/A-Real-World-Client-Server-Application-in-Delphi/
and
http://www.coderprofile.com/networks/source-codes/142/delphi-clientserver-winsock-example