I am working on a web cast for next week ( the 13th ) on Decomposing applications for SOA design. Here is an abstract of the session. Let me know what you would like to hear on this topic.

Application Decomposition for SOA Based Systems
http://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032254390&Culture=en-US 

Description:  This webcast will deal with the concept of decomposing applications to enable architecting better service oriented applications. Integrating software applications is the new mantra of the Web Services world but in order to achieve this, business services and boundaries should be clearly identified and broken down into autonomous entities Decomposition of applications based on business logic is very critical in maximizing the benefits of a service orientation. This webcast will use a Supply Chain System as the example for illustrating the concept. It will also look into some of the Design Patters and Microsoft® technologies that are applicable.