Wrote another article about Grids.  This one is about migrating from WS-RF to WS-RT.  It covers some of the general issues and components of each standard you’ll have to focus on and provides links to more detailed information for implementing your solution.  I had some experience with WS-RF and this article helped me learn more about WS-RT myself.  Hope it help others as well!

Migrating from WSRF to WSRT