If you are migrating your MySQL database to SQL Server any time soon, you will be very happy to hear that The Microsoft SQL Server Migration Assistant (SSMA) family now includes a CTP 1.0 for MySQL which has just been released. Versions are included for both SQL 2005 & SQL 2008.
The Microsoft SQL Server Migration Assistant (SSMA) is a toolkit that dramatically cuts the effort, cost, and risk of migrating to SQL Server.
See more details & download from here: http://blogs.technet.com/dataplatforminsider/archive/2010/01/11/free-download-microsoft-sql-server-migration-assistant.aspx
So now the SSMA family includes the following free toolkits: