BizTalk articles in CodeProject.com
1. First Footsteps with Orchestrations in BizTalk Server 2004, by Naveen Karamchetti.
http://www.codeproject.com/biztalk/FootstepsInOrchestration.asp
This article shows you how to create a simple orchestration in BizTalk Server
2. Configuring BizTalk Orchestrations to handle un-typed messages, by Naveen Karamchetti.
http://www.codeproject.com/biztalk/UntypedBiztalkMessages.asp
This article describes how to create/handle un-typed messages in BizTalk Server orchestrations, which message type is set to ‘System.Xml.XmlDocument’, instead of a schema type.
3. Writing Custom BizTalk Founctoids, by _ABHILASH_MS_.
http://www.codeproject.com/biztalk/CustomFunctoid.asp
This article shows you how to write custom BizTalk functions. One of the biggest benefits to using custom functoids is that you have full access to the .NET libraries. Inline code within maps gives only limited access to libraries, and coding is often primitive. Custom functoids are created as .NET class libraries, and they have all of the related coding benefits.