I tried to DL the VZAppZone based on the instructions on the website but all I would get was a "device not recognized error".
I called the tech support people and they said I could get the IM software by going to:
http://mobile.vzwapp.com
Get Apps
Mobile IM
Downloaded and installed it. Waiting the 5 minutes before reloading the IM software.
Yep, it works!