Img2icns will make attaching icons to files an easy task. Just drop some files on the preview box, and the icon will be applied immediately. The history will track all the icons you've created, so you can apply them later. Img2icns can also convert Icons into Images in the same easy way.
* Convert all Mac OS X-supported image formats, including Illustrator and Photoshop files
* Export icons as .icns files, Finder folders, iPhone icons, or Favicon web icons
* Attach icons to any file by a simple drag'n'drop
* Extract and export icons into images from any file
* Keep all icons ready at hand in the History
* Automatic update via Sparkle
Pricing and Availability:
Img2icns is available in a lite or pro version. The lite version is free, a pro single user license is priced at only $12.90 (USD) and may be used by a single person on any number of Macs as he/she is the only user of the license.