It told me I had 11 messages in my OUTbox (which I don't know where it is...don't they go away when I send them?)
No, every time you send a message it gets stored in your Outbox.
How do I go clean out my outbox??? And what's the difference in outbox and IM box?
The Outbox contains messages sent, and Inbox (not IM box) is messages received. You're allowed to store up to 10 in each; if there's more in either of them, the oldest is automatically deleted to make room for the new one.
When you first open your Instant Message page, it's your Inbox that's displayed. Click on
Outbox to make that come up, and then you'll see a listing of the last 10 messages that you've written and sent. Click
Empty Outbox to make them all go away permanently, or you can remove them selectively same as you can with your Inbox.
Hope that helped, Patti!