Next I opened SmileyTable.plist within the English.lproj folder in that same location, and I added this to the file:
<dict>Now I have an additional emoticon in iChat!
<key>ASCII</key>
<array>
<string>>:(((</string>
</array>
<key>Filename</key>
<string>veryangry</string>
<key>SmileyName</key>
<string>Very Angry</string>
</dict>
[Editor's note: I have no idea what happens when you send a custom emoticon to someone who doesn't have the matching TIFF on their own machine...]

