I have a vista 32 bit pc that I have just put a new hard drive in , and then installed vista 64 bit (along with another 4GB ram) .it now can boot into 32 or 64 from the boot manager . Ive reinstalled poser pro in vista 64 but it has installed to a folder program files x86 does this mean its not a 64 bit program (it does run ok) ive not updated it yet would I need to do this first? from the few problems Ive had in the past in 32 bit vista with 4gb ram the advice seemed to be more ram and 64 bit system .this ive now, done 8GB ram 64 bit vista i was hoping Id seen a big improvement and in Vue 6 ,the other render program im using (though ive not had time to do a big render yet)