I just purchased a Windows 2003 server box and will be migrating my current exchange server thats on a windows 2000 box to it. I have no idea where to start and need step by stpe instructions. I know that its not recommened but my exchange server is going to be my DC as well and I will have to migrate ad users to it as well. I most concerned about the exchange 2003 server the most. I have a large mail store to move. its around 40GB. This is very important to do this correctly for me.