Biztalk
this is only on biztalk no EAI

Microsoft ESB Guidance at CodePlex has updated to CTP2
Overview
The Microsoft ESB Guidance provides architectural guidance, patterns, practices, and a set of BizTalk Server and .NET components to simplify the development of an Enterprise Service Bus (ESB) on the Microsoft platform and to allow Microsoft customers to extend their own messaging and integration solutions.
One pf the major changes for me is the fact that the core components have been updated to the R2 release of BizTalk Server ;)
change of plans on my part , moving away from ASPNET 2.0 programming , back to BizTalk 2004 programming
I think i'm doing the right step
...so I was looking for an old link that I like , here it is
The Bloggers Guide to BizTalk: Workspace Home
I was looking in the rest of scott woodgate Biztalk Webcasts
and came across Visio Template with interact with Biztalk
download from :
BizTalk Server 2004 Orchestration Designer for Business Analysts
should be very usefull , I think so any way
Well , it's in the MS site , a collection of BT webcats list in one place
http://www.microsoft.com/biztalk/evaluation/introduction.asp