Screencapping Programs

I know a lot of people on my f-list make screencaps out of AVIs - any recomendations for good, free programs to do it with? My current method consists of finding the shot in VirtualDub, copying it to the clipboard, and then pasting in PSP and saving, which works when it's only one or two, but I've got a bunch of files to do a lot from, and there _has_ to be a simplier way. Help?

Minor Annoyances

I'm always a little irritated to discover that I've been mishearing a song for a while, mostly because I feel like an idiot, but even more so after I've just made icons with one of the lines I think I've been mishearing, although I have no official source for the words.

Oh well. I like the line anyway even if it's wrong, and I will chalk it up to my occasional inability to understand Southern drawl. You think I would, with the number of Southern relatives I have, but no. I think accents in general kind of scew me over - I have trouble understanding people who don't enunciate well.