That's really easy. I'm guessing that you're talking about saving icons to use on your desktop, right? Well, you can either download sets of them
from
about a thousand different sites or
create them in Photoshop.
If you just want to create icons, you have to remember that they are different from standard images. They are have standard sizes (usually quite
small): 16x16, 32x32, 48x48... and that one single icon is composed of several images, each of them with a different size and number of colors (mono,
16 colors, 256 colors, 16.8M, ect.) I'm beta testing Vista now, and it's a whole different ball of wax with those files, but that's a story for
another time..
The most important property of an icon is the ability to include transparent areas. This allows seeing the screen background behind the icon within
its square image.
The extension for a Windows icon file is "ICO", of which only one icon can be saved in an icon file. If you want to group several icons in a file
you must create a library. Most people simply save pictures that they want to use as .ICO (taking a standard .gif image called FOLDER.gif and saving
it as (for example) FOLDER.ICO). That really doesn't look right or work well.
You can save preexisting ICO files in XP, which will work right and look nice by simply saving them to disk and remembering to save them as .ICO
files.
Lastly, please halt any thinking of switching to OSX, or
any Mac product - the Mac has been systematically debunked again and again. Even
Windows XP, as buggy and unreliable as it is, performs better than OS X. If you want performance
and stability, go with Linux. But that's
really neither here nor there and I'm getting off topic.
[edit on 6/6/06 by Bripe Klmun]