Thanks to Hawkeye for letting us know.
AOL has pushed out the final 5.1 build of their popular instant messaging software. The update now sports the ability the integrate with Windows XP much in the same way that MSN Messenger does. See below for a taste of what is new.
Outlook Express Integration
See Your AOL Instant Messenger Buddy List within Microsoft Outlook Express
Send IM's directly from Outlook Express
AIM Expressions
Express yourself and send your expressions to friends and family when you initiate a conversation.
Content Panels
Find public chats, get sports news, and find fun things to do right in the buddy list.
Typing Indicator:
See when someone's responding to your messages.
Note:Aim 5.1 requires you to be running Windows 98 or later
Download: AIM 5.1 Final
News source: AOL Instant Messenger 5.1 Official Page