IT-Director.com | SQL Server scales up "Microsoft yesterday (April 24th) released SQL Server 2000 (64-bit). Now, this is definitely minority sport territory. The number of users that require more than the current 32-bit limit of a 4 GB memory space (which you can exceed anyway by means of Address Windowing) is limited."
Many people need to check their assumptions in this context -- if you can get multi-processor 64-bit servers with gigabytes of memory at amazingly low prices, how many application areas could benefit from multi-gig RAM servers? The variables and dynamics have changed (radically), but many people still seem to be using old equations.