Is it possible to install the Exchange System Manager on a NT 4.0 Workstation SP6a with all rollups and patches? A client has a NT 4.0 Workstation that has a hard drive in it for archiving PST files, and the idea was to install C2C systems Active Folders on there to do searches instead of across the network, but Active Folders Admin requires the Exchange System Manager. Exchange is 2000 SP3. John Tolmachoff Engineer/Consultant/Owner eServices For You