You can download Verichat 1.91 Over-The-Air by entering this web address into your BlackBerry browser:
http://www.verichat.com/ota/VeriChat.jad

Handango did not allow PDAapps to post a version that had all 4 networks, because of some kind of deal they have with AOL.

Please note, if you last installed Verichat via BlackBerry Desktop, you must uninstall that version before you download Over-The-Air. Yes, your same registration code will work.