Like many others I've found through Google, there seem to be some problems getting a GPRS connection happening as there isn't a working modem script for the V3.

For those that are interested, I've created one by taking the parts of a couple of other scripts.

I've got it working with Telstra in Australia and someone has used it in Iceland.

If you're interested, the script and some notes are at www.thepdaguy.com.