All I know is that AMOS 3D is an extension to AMOS The Creator. So you need AMOS The Creator to install AMOS 3D. AMOS 3D it's not a stand-alone program. Included in the AMOS 3D package, is a disk to update your AMOS The Creator to the latest known version, which is 1.3.
I have AMOS Pro, and I think that it's the best of all AMOS packages over there.