Mike in Michigan wrote in complaining that while he loves the easy way to take screenshots in OS X, he didn't like that they saved as PNGs. Not that he has anything against PNGs, mind you, but most of the sites he visits let him embed JPEGs only. Well Mike, we can help.

Command-Shift-3 is the command that takes a screenshot in OS X (or Command-Shift-4, if you just want part of the screen). It saves the image as a PNG. In Mac OS X 10.4 and later, you can change the default screenshot format at the command line.

Open Terminal and type in:

defaults write com.apple.screencapture type IMAGE FORMAT.

The image format can be JPG, TIFF, PDF, BMP, PICT, or others. You can even change it back to PNG with this command, if you change your mind later.

Then log out and log back in again.

After that, any screenshots will be saved as the format you specified.

Real Networks is suing the movie studios to license their RealDVD software. The studios are suing Real to stop the DVD-burning software form being sold. Meanwhile, there are hundreds of DVD rippers out there, and many claim to be legal. Why is Real under the microscope?

Watch the show on CNET TV.

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Your calls

There are tons of good backup-software applications available on the Web. Brian likes Second Copy and Rafe recommends Carbonite.

HTC Touch Diamond, BlackBerry Curve, or Motorola Q9? If we had to choose, we'd go with the Curve.

Need help puttin' OS X on a PC? Well, keep in mind you might be breaking the law, but there's a Web site that can advise you. Head to the Osx86project.

Email us! Whether it's a regular text note, or a recorded video question, you can send it to cnetlive@cnet.com. Keep your videos to 15 seconds or less, post them to a Web site like Youtube and then e-mail us the link. Here's an example.