Hi. "Find" does not find system files, only relevant user files. Most people do not look for files hidden deep within the system's guts.
If your smart kid Tim is interested, here is how the real UNIX pros look for a file.
Open Terminal and paste this command in the window:
find / -type f -name '*.icns' 2> /dev/null
The result will be a list of every icon file on your computer. You can do some pretty cool things with icon files, for example the transparent icon on
•this page is converted fron the Mail icon file.
You can also set your "Computer" icon to any icon instead of the stupid old iMac G4, but it takes a bit of hacking.
You can view any icon image in Preview with the open command:
open /Applications/iChat.app/Contents/Resources/iChat.icns