I recently saw a very well put together code walkthrough presentation by Oliver Sturm on how he built a Connect Four network game using WCF and WPF. You can download the entire source code for his application here. If you haven't got a .NET 3 or above IDE then see below to get all the free resources to set this up. I find downloading and installing the Orcas DVD image much quicker than downloading the VPC image which can be very large. The Orcas express DVD image is 849MB (whereas the current VPC ......