Here is the link to it on Code Project
http://www.codeproject.com/cs/internet/Genesis.asp

Tim

>Will do. Thanks
>
>
>>Kevin,
>>
>>Search on google for a program called Genesis UDP. When I was learning to do network stuff I used this sample application to tear apart and explore. It was worth it. It is only using UDP so a bit limited, but should give you a head start. I have and read the book you mentioned as well.
>>
>>Tim
>>
>>>I have a book called "C# Network Programming" by Richard Blum.
>>>http://www.amazon.com/C-Network-Programming-Richard-Blum/dp/0782141765/ref=pd_bbs_sr_1/103-7799866-0219011?ie=UTF8&s=books&qid=1182196498&sr=1-1
>>>
>>>I have been through it twice.
>>>
>>>What I would like to do is to be able to pass simple text messages between multiple PC's across
>>>the internet. A very simple IM application is what I'm envisioning.
>>>
>>>So far I'v been unsucessful. I'm not sure if its a firewall issue or something else. Know where I can
>>>get an example of this?
>>>
>>>Thanks
>>>
>>>
>>>
>>>
>>>
>>>>WinSock is the old API for the COM based model. In .Net there is not WinSock, but there is a System.Net.Sockets. Here is an excerpt from the docs:
>>>>The System.Net.Sockets namespace provides a managed implementation of the Windows Sockets (Winsock) interface for developers who need to tightly control access to the network.
>>>>
>>>>
>>>>>Are you referring to .net WinSock, or some other technologies in .Net?