I think the only downloads directly from the SCI Studio homepage are for EGA, SCI0 tools only. However, Brian was sending out beta copies of SCI Studio 4 (which had support for viewing/extracting VGA resources) to some people who donated, but I'm not sure if he still does. As for other, non-SCI Studio tools, it's possible on his AGI/SCI page there are some tools, or links to tools for extraction of SCI VGA graphics, but I don't remember seeing any.