hey try this.i called t mobile and was on the phone with them for 2 hours trying to set this up and they couldnt but i went to this sight and i got mine working just now.
Setting up the data account - On the PDA, tap on Start and then Settings.
- Tap on the Connections tab.
- Tap on the Connections icon.
- Tap on the Advanced tab.
- Tap on Select Networks.
- Under the first drop down box, tap on New…
- In the Enter a name for these settings: field, enter T-Mo WEB
- Tap on the Modem tab.
- Tap on New…
- In the Enter a name for the connection: field, enter T-Mo WEB
- Tap on the Select a modem drop-down list and select Cellular Line (GPRS, 3G).
- Tap on Next.
- In the Access point name: field, enter internet2.voicestream.com
- Tap on Next.
- If required, in the User name: field enter
- If required, in the Password: field enter
- Tap on Finish.
- Tap on the Proxy Settings tab.
- Select the This network connects to the Internet option.
- Tap on ok three times.
- Tap on x to close the Settings screen.
- Tap on Start, then launch Internet Explorer.
- Tap on Menu.
- Tap on Favorites...
- Tap on the Add / Delete tab.
- Tap on Add...
- In the Name field, enter T-Mobile
- In the Address field, enter Cell Phones,Cellular Phone Plans,Prepaid Cell Phones,Free Cell Phones & Deals - Stick Together with T-Mobile
- Tap on Add.
- Tap on ok.
- Tap on x.
The settings have been applied and are ready for use.