Jean-Marc has just posted a lab on code gallery, which provides a fully worked, step-by-step example of creating a DSL from scratch. If you're new to DSL Tools, or want to teach others how to use them, then you may find this useful.
Nearly forgot the link. It's at:
http://code.msdn.microsoft.com/DSLToolsLab
PingBack from http://mstechnews.info/2008/11/teach-yourself-dsl-tools/