The AIM application comes preloaded on most Verizon Wireless phones. To check if you already have it -
1. Check under "Messaging"
2. Then under "Mobile IM"
Or
1. Check "Get it now"
2. Select "Tools on the Go"
3. Select "Mobile IM"
I don't think Verizon supports AIM, even if the AOL website gives you an option to download it for Verizon. It has never worked on my Verizon 8830, but Sprint allows AIM on its version. JiveTalk is much better than AIM anyway