Hi, all, I've written a simple gtalk client which uses GPRS/EDGE. It's mainly for users who dont have a BIS/BES data plan.
The software now has some elemental features, and it's somehow crude, but useful. And it's a open source software based on JXA(J2ME XMPP API) project.
Anyone who are interested or intending to help develop could visit the project site: btalk - Project Hosting on Google Code