This area (a sub-section of the User Info area) lets you set up your ICQ, Yahoo, MSN and AIM usernames/passwords so that you can see your contact list from those messengers within the iCu2 Pal List.

ICQ requires your UIN to be entered.

AIM requires your screen-name to be entered

Yahoo requires your screen-name to be entered

MSN requires your full MSN/Hotmail email address to be entered. 

More information related to the External Messengers can be found at: http://www.iCu2.ws/faqs/misc/pal-colors.html