Here is the slide deck from my presentation on SOA with WCF that I delivered to the Tulsa Developers .NET Group 9/29/2008. If you live around Tulsa and have not been to one of their meetings check out the Tulsa Developer .NET website and give them a shout. David Walker has a great group of people there and they are doing great things like Tulsa Techfest. Also, don't forget to check out the Bartlesville .NET User Group while your in Oklahoma.