Just wondered what you folks are using to take screengrabs of your movie content?

Ive heard some programs can only pull grabs from the first frame in a clip and we wanted to avoid that because the first frame of a movie is usually the title and opening sequence LOL

Are there any programs that will let me go to a specific frame within the clip and pull a screencap from that frame?

Also, on a related topic, whats the best (read as cheapest LOL) software to get in order to take screencaps every 5 seconds to use as stills content?

Regards,

Lee