Our 64 bit SQL Server case studies can be found @ http://www.microsoft.com/sql/64bit/productinfo/casestudies.asp

The 64 bit SQL Server home page is @ http://www.microsoft.com/sql/64bit/default.asp

Some material around 64 bit SAP/SQL @ http://www.microsoft-sap.com/technology.asp#64_bit

Microsoft SQL Server 2000 (64-bit) Analysis Services: Why Migrate, and What to Expect If You Do http://www.microsoft.com/technet/prodtechnol/sql/2000/evaluate/ansvcs64.mspx

The Advantages of 64-bit to SQL Server 2000 Enterprise Edition Business Intelligence Customers http://www.microsoft.com/technet/prodtechnol/sql/2000/evaluate/64btdwc4.mspx