The thought of "rails migration" rocks ! and I am likely to use by doing this during my coming new project on .Internet platform for db schema version control.

MigratorDotNet appears like something I want however, many restrictions block me, for example no saved procedure support. What are the better solutions for your?

There is a similar question, which incidentally turns up among the top google results (wooo, gogo stackoverflow!) having a nice roundup within the top scoring publish:

http://stackoverflow.com/questions/313/net-migrations-engine