I had many problems with the pre-release using Windows XP Pro 64 bit version on an AMD Athlon 64 FX-60, 4 gigs ram, 500 gigs drive space and Nvidia 3450 Quadro video card.  in regards with trying to make it work with poser 6 figures.  If I loaded a scene built with Vue 5 infinite into Vue 6 that previously had poser charactes and then tried to update any of the figures with poser or add a new one it would always crash.  Also, when making a new Vue 6 scene, after adding a poser 6 character if I changed it a certain number of times with poser and had vue autoupdate it would occasionally crash.  In the end I could not use it for regular work and had to resume using Vue 5 Infinite.  They said the problems I reported would be fixed when thefinal release was made available.  I hope so.  I was hoping to build more complex scenes with the 64 bit version.