voice and text chat program

[Adbibr]

I am C# programmer & I want to Develop
voice & text Chat program

what I should read & understand to start programming this
project if I want to use C# & .NET Technology

If anyone have Book , articals or links
please tell me about it.

Thank You

 

[MajorTom]

this one maybe look interesting for you

http://www.codeproject.com/useritems/dotnetchatapplication.asp?target=chat

this other is for voice but not in C#

http://www.codeproject.com/internet/voicechat.asp?target=voice|chat

MajorTom