I am not using that ability win 7 does that by default., your friend suggested that. Dvd fab does not come in the 64 bit flavor. So indeed dvd fab is 32 bit software There is no x86 partition this was a clean install. I had no trouble with vista
Under Windows 7 / Vista 64, 32-bit applications run on top of an emulation of a 32 bit operating system that is called Windows on Windows 64, or WOW64 for short. WOW64 intercepts all operating system calls made by a 32 bit application.
For each operating system call made, WOW64 generates native 64 bit system calls, converting 32 bit data structures into 64 bit aligned structures. The appropriate native 64 bit system call is passed to the operating system kernel, and any output data from the 64 bit system call is converted into a format appropriate for the calling application before being passed back.