It would help to have some clarification. I have Small Business Server 2003, running on an X64 box [Intel 64-bit processors). We need access to more memory and have been hoping to "upgrade" to SBS 2008. I did not install the original SBS 2003. Do I presume that the installer put an x86 version of the spplication on an x64 box? If the box is 64-bit but the app is not, couldn't I "upgrade" and not have to wipe off my whole server and start over again?