The T-Mobile T-Zones plans are not intended for the Pocket PC Phone Edition, but some people have gotten them to work. You will NOT get a GPRS connection if you go this route. It is possible to setup a connection to the WAP gateway, you will need a WAP capable browser, and you will only be able to hit WAP enabled sites. In my mind, this kind of defeats the purpose of having a pdaPhone vs. a normal web enabled phone. The following steps were listed as a way to do this:
Hope this helps:
Connection Manager -->
Internet Settings --> Modify
New -->
Name: any name...
Modem: Cellular line (GPRS)
Baud: 19200
APN: wap.voicestream.com
Finish
Tap&hold the new connection and choose:
Always Dial
Then tap&hold new connection and click: Connect
A username&password dialog will pop-up, leave all blank and check the option to remember the settings next time.
Now you need a WAP browser (like Klondike WAP Browser, search on handango.com) where you need to configure it to use a WAP gateway.
WAP gateway: 216.155.165.50 Port: 9201
Now you should be able to use the new connection and browse T-Zones by going to (from the WAP browser, not IE)
http://wap.myvoicestream.net
[/siz]