Minimize what to tray? I haven't used ICQ in about 6 or 7 years and further detail would have been nice
The contact list more or less already does.
Conversation windows (IMO) have no place in the tray (too many icons) and even tabbed convos don't belong there, it's just not right. Not to mention it will only add to the somewhat endless number of people which fail to read preference options properly and come complaining on the forums and irc channels wondering where their conversations have disappeared to.
/ 
