Preferably one that wont bequeath me a virus. Im newly trying to resize some pictures.
Answers: Try the GIMP.
GIMP is the GNU Image Manipulation Program. It is a freely distributed piece of software for such tasks as photo retouching, model composition and logo authoring.
http://www.gimp.org/
Google for the GIMP. I know it sounds similar to something out of a scene of the movie Pulp Fiction, but it really is a free dummy editor (the full autograph of the program is GNU Image Manipulation Program).
You might involve to install X11 to trade name it work. If you're running OS X 10.3 (Panther), look in Apple's website. If you're using OS X 10.4 (Tiger) or OS X 10.5 (Jaguar), afterwards it's right on the DVD.
Umm...virus on a Mac?
http://www.pure-mac.com/graphics.html
FYI iPhoto can resize photos.
gimp, that's here
http://www.gimp.org
also
http://www.irfanview.com is pious and
picasa
http://www.sleekbytes.com/picasa-google. tops for organizing/sharing the lot, burning, making small animated movies and more.