Upgrading Exchg 5.5 server from NT>>W2K

Hello. I need to upgrade the server running Exchange 5.5 from NT 4.0 to Windows 2000. This server is also my domain’s PDC. If I simply upgrade by inserting the W2K CD-ROM and install W2K on top of NT 4.0, instead of doing a fresh install of W2K, will this upgrade affect in any way the current Exchange installation, and the ability of users to access their information store/email?

Doing an upgrade would be so much simpler that a fresh install of W2K…..should I have any problems?

Any suggestions would be really appreciated.

J. Bedsole
Boston