Just seen this on the gotdotnet Microsoft Pattern & Practices community server, Architecture and Design Guidelines for Business Intelligence Applications.  I'm very interested in the BI area so this should provide some good guidance. 

Here is a synopsis:

"Welcome to Microsoft Patterns & Practices Business intelligence architecture and design guide. This guide gives you prescriptive guidance on how to overcome architectural challenges and design issues when building Business Intelligence solutions using Microsoft platform.  The Architecture and Design Guidelines for BI Applications provides prescriptive guidance on how to overcome architectural challenges and design issues when building Business Intelligence solutions using Microsoft platform. This guide is intended for software architects and developers who are developing Business Intelligence applications using SQL Server 2005 - Integration Services and Analysis Services"

Go here: http://www.gotdotnet.com/codegallery/codegallery.a... for the info.