Our Non-Profit company has finally gathered enough funds to purchase Exchange, however the only version we could get is Exchange 2007. I only did a test lab with Exchange 2003 and could migrate to this version. Here is the biggest issue - We still are using Windows 2000 Server as our PDC. Is there a way to continue to use this layout? We have a Terminal Server that is using Windows2003 Server and can use as a BDC. Any help would be appreciated.

Exchange 2007 requries Windows 2003 SP1 64 bit or Windows 2003 R2 64 bit OS.You need to have a Domain controller and a GC that is configured on the above two versions of OS as Exchange 2007 cant communicate with the Windows 2000 (DC or GC) Operating system.