Q. I've seen posts in Web site forums extolling the virtues of programs not listed here. Why not use them?

A. When companies have to stoop to spamming forums with instructions for ripping DVDs or converting files with Tool X, Y, or Z, it tells you something about the quality of that company and its products. The three programs we've listed will do the job.

Q. I downloaded HandBrake, ripped a DVD, and it created an m4v file. I'd like to edit this movie with iMovie but iMovie won't import it. What do I do?

A. All you have to do is change the .m4v file extension to .mov. Do that, choose File -> Import -> Movies in iMovie '08 or '09 and the movie will be imported into your iMovie project. With iMovie HD you can just drag the .mov file into the bin or timeline.

Q. Where can I find instructions for ripping DVDs?