OK...My viewer is installed on a Dell Inspiron E1505 laptop...Intel Centrino T2300 CPU, 1.66 GHz, with 2.5GB RAM. Not sure about the video card, but it is an integrated chipset. I'm running Windows XP Media Center with service pack 3. I'm a new user, and the viewer worked fine for about a week. Then yesterday, it would not launch...it freezes with a small window displaying "initializing VFS".