I'm a Mac newbie - I just recently bought an iBook - and I love it! However, I'm having a small but annoying problem with the Grab utility. The first couple of times I used Grab the images were saved as JPEGs which would default open with Preview which was great - exactly what I would have wanted. However now, whenever I do a screen grab the images are saved as PDFs and they default open with Acrobat Reader. I don't know how this happened and I want to reverse it (Reader's too slow to boot up). I've opened Grab from the Utilities folder and had a look at Preferences but I can't seem to find out how to change it. Any help would be much appreciated for this, I know, insignificant but frustrating problem.