hey, i'm using vista ultimate 64bit for my OS and am running the newest version of anydvd HD. I've got a bluray iso (from my PS3) loaded in my roxio emulator. When I try to rip the 40gig iso using your tool my physical memory jumps from 800 megs to 2.99gigs. I have 3 gigs installed. It steadily climps to 2.99gigs in about 2-3 minutes or 5-6% completed ripping. It slows my entire system down and errors the HD ripper. I have to restart to be able to even open windows explorer. Is there any reason for this??? Vista 64 bit issues? i'm so frustrated. thanks for any input.