If you’ve installed the latest AIM beta (AIM 5.5.3501), you may have noticed that it now displays the AOL Today window on startup — and there’s no UI to turn it off. However, Daniel Glazman has dug up the registry key which will deactivate that:
[…] Launch regedit and look for key ShowAimTodayWindow. If you have more than one AIM account on your computer, make sure you are modifying the correct user (look at the status bar at the bottom of the window and check if you AIM nick is in). Then right-click on the "ShowAimTodayWindow" string and select Modify. Turn the 1 into a 0 in the dialog and click OK. Close regedit’s window. It’s done.
Ah, that’s not too bad. I’ll have to be sure to do that once I get back to my Windows box.