A simple option that I used was to connect a vcr to the video card input on
my computer and simply 'cut and paste' the images I wanted. In my case I was
writing about TV so there were no problems about films having been scanned
and cropped for TV which might pose a problem for you, but if not, and
assuming that the use of a single image from each film (or in my case TV
show) was not infringing copyright, then this might be a 'quick and dirty'
solution for you.

All the best,

(Dr) Peter Hughes  Department of Media Studies  La Trobe University
Bundoora VIC 3083
ph: +61 3 9479 3065 (w),  fax: +61 3 9479 3638 (w)

Screening the past. An international, refereed electronic journal of visual
media and history:

Screen-L is sponsored by the Telecommunication & Film Dept., the
University of Alabama: http://www.tcf.ua.edu