It's been about time for us to Upgrade to Exchange 2003, but we had planned it for later this year but are being rushed into it due to this whole Day Light Savings thing. We currently have 2 Exchange servers, both 2000. Is there any harm in upgrading our main front end exchange server to Exchange 2003, while leaving our other one 2000? I assume not, seeing as that's what we did when upgrading from 5.5, but I just wanted to make sure I wasn't missing anything. Should be a rather simple upgrade correct?