Hi. I have Windows 7 on my desktop. The 32 bit version is installed. I also have a cad/cam program installed. I only own the 32 bit version of my cad/cam software. I am trying to do more and more complicated assemblies with the cad software, but I'm running out of memory. I have 8 gigs of ram installed, but 32 bit windows only uses half of it. My windows license would allow me to reinstall windows with 64 bit, which would allow me to use all my ram, but would 32 bit cad/cam software run on a 64 bit system? Would I be able to use all my memory with a 32 bit program? Thanks.