SQL Server 2008 has launched the new Migration Solution Center.  This site provides customers with prescriptive guidance and a clear process for executing successful migrations or upsizing your existing databases to SQL Server. 
On this site, the freely downloadable SQL Server Migration Assistants (SSMAs) reduce the efforts required to move databases from Access, Oracle, and Sybase to SQL Server.  Download these tools now and use them to perform assessments, move data and schema, and automate the process of database migrations to SQL Server.