9 years back I joined Microsoft to get ISVs to stop building Oracle solutions and to instead build SQL Server solutions. What would have helped my job immensely would have been a migration tool. Hey presto - 9 years on and we have such a tool.
SQL Server Migration Assistant enables customers to migrate their applications from other database to SQL Server easily and in a predictable manner. Details of how to get access to the beta can be found at http://www.microsoft.com/sql/migration/default.asp Enjoy!