Which of the architecture pattern?

the question is, what i want to understand what architecture is an application template forsilverlight bussines application?


reflections:
there a client application. he tied up the data access logic (presentation), not as business logic.
there a northern annex. here it is also responsible for business logic and access tothe data (model and controller). 

in particular, such a server application created the data model using the ado.net entity, access resources - provides service wcf ria.
in opinion it something either j2ee, pcbmer, "parent" which the mvc. perhaps mvvm?

tell me who he thinks knows? or maybe there is a branch where it matter has been answered?

if going silverlight suggest go mvvm.

http://channel9.msdn.com/events/pdc/pdc10/cd50

http://blogs.msdn.com/b/tims/archive/2010/11/02/kung-fu-silverlight-architectural-patterns-and-practices-with-mvvm-and-ria-services.aspx

http://social.msdn.microsoft.com/forums/en-us/architecturegeneral/thread/d26e7325-0fd5-4fab-9756-c18cb603ec51

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