i created a test environment with 1 DC and 1 Member Server and installed Exchange 2000 on the Member server. it was working fine. when i changed the name of the server, all exchange services stopped. i dont know where the problem is. can anyone help me solve this problem ( i dont have any excahnge service packs installed on the machine) i also need to know the difference between the Exchange standard and Enterprise Edition in terms of the storage group and mailbox/public stores (what is the limitation of using E2K standard version). Thanks , ikm