Infopath

InfoPath Processinginstruction
http://kjellsj.blogspot.com/2005/04/submitting-xsiniltrue-values-from.html

xsi:nil Attribute binding support
http://msdn.microsoft.com/en-us/library/ybce7f69(VS.80).aspx


Setting up Infopath and UDC
http://williamkent.net/archive/2008/06/09/configuring-sharepoint-for-use-with-infopath-and-forms-server.aspx

Code to store Infopath to WCF
http://williamkent.net/archive/2008/06/09/code-to-store-infopath-forms-via-wcf.aspx

Creating a form in Infopath for saving and loading through WCF with parameters for Forms Server

How To: Add the Contact Selector to InfoPath 2007