将Sharepoint 2007和数据库从两个独立的服务器迁移到一个物理服务器

I'm looking for any advice on the best way to migrate a SharePoint 2007 installation and a database. The current setup is a server running SharePoint 2007 with the database stored on a separate SQL Server installation. Due to performance issues we are planning to move the SharePoint application to another server and also move the database onto the same physical server and run it using SQL Server 2005 Express.I'm looking for any advice on the best way to m