Yes, there are a few things you can do.
If you just want a to-do list that reminds you to get off AIM, you would have to obtain Trillian Pro, which I use. There is a plugin called "Do Me" that reminds you every few minutes to do stuff.
However, if you put on the to do list to uninstall it cause you feel like staying on AIM it's not very effective
I'm not sure if that's what you're going for.
- Genia