how to setup voip using UTstarcom PPC 6700 and wireless access point?

Hi Everyone, I am completely new to VOIP and don't know where to start? I have read few of the voip guides which talk about cheap voip services out there to make a cheap international calls. So this is what I have: 1. A wifi enable cell phone (UTstartcom PPC 6700) with Windows mobile 5.0 2. A wireless access point 3. Little bit of awareness of already existing voip (actionvoip, jumblo, nymgo) services Question: I was wondering if there is a way to setup some kind of voip client which is compatible with windows mobile 5.0 and let me make call through my wireless access point? Do anyone know if this is even possible? Thanks, Raj
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