I have an Exchange Server 2003 Enterprise in a Windows 2003 Enterprise Edition Server. The server is a Dell PowerEdge 2950. I also have the Primary Domain COntroller in Windows Standard 2003 Server. I just bought a PowerEdge 1950 but I want to install Windows 2003 Enterprise Server 64 bit Edition. Are my servers or my network affected if I have one server with 32 bit operating system and another server running 64 bit operating system?