Abstract of INFO-MAC archived encoded Mac binary file
   'comm/inet/change-icq-user.hqx'
  Uploaded 01/15/2002   216567 bytes

From: Noah Stewart <noah@bipeddesign.com>
Subject: Change ICQ User

Change ICQ User allows you to change your ICQ user from the MacOS by 
double-clicking an icon. It is useful for anyone who uses multiple 
ICQ accounts on their Mac. This program saves you the trouble of 
opening ICQ, looking to see who the current user is and changing the 
user if necessary.