Microsoft says servers running the company's website and MSN Search and Messenger applications have been migrated to the 64-bit version of Windows Server 2003. 'Our MSN search engine is actually built on several thousand systems running the x64 version of Windows,' a spokesperson said. In addition, 'the entire Microsoft.com site has been migrated, and we serve 30 million unique visitors every day.' According to the company, the Messenger servers handle about 70 million users. (more)