[Tigerblade]

Q: Can you send messages to an offline user, so they'll receive it when they go online?
A: Yes. To ensure you have this feature enabled--as well as being able to receive IMs when you're offline--you need to sign on to AIM, go into the settings for that screen name (on buddy list click on menu EDIT, then SETTINGS), click on the "Offline IM" button on the left, then put checkmarks beside options you want enabled.

Q: Is there a way to retrieve messages I sent or received earlier?
A: There is no way to automatically retrieve old messages unless you have enabled IM Archives from the appropriate tab in Settings (Edit>Settings...). If this is the case, your archived conversations are stored in the specified folder; by default, that folder is C:\Users\<your user name>\AIMLogger\<your screen name>\IM Logs.