What are the system requirements for Exchange 2007 server? I was able to download a 32bit version of Exchange 2007 and run it on my 32bit processor. But, now I have an Enterprise Edition of Exchange 2007 and I can't install it. It looks like it wants a 64bit processor. Does the registered version have different requirements? I looked at the MS web site and didn't see anything about the 32bit processor support anymore. If anyone knows for sure, please let me know what the requirements are for Exchange 2007. Is there still a 32bit licensed version available or is it now 64bit only?