Hello, Q1: is it possible to move the exchange 5.5 server application from NT4 operating system to W2K server without upgrading the exchange application (I want to reduce too many change at one time!) Any Microsoft article to support this? Q2: any migration tool available to alleviate the risk? Thank you and best regards Michelle Chan Email: mchan5@xxxxxxx ---------------------------------------------------------------------------------------- This is a PRIVATE message. If you are not the intended recipient, please delete without copying and kindly advise us by e-mail of the mistake in delivery. NOTE: Regardless of content, this e-mail shall not operate to bind CSC to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose. ----------------------------------------------------------------------------------------