Get media player classic form
http://www.divx-digest.com/software/...r_classic.html
Play your vid and when you want to take a screenshot press the F5 key (saved to your C:\ drive)
rinse and repeat as needed....
BTW it will also play alot of partially downloaded files (while it's still downloading) so those of us on dialup can see what we are getting before we waste time on it.