T-Mobile 535 - Manual (Page 9)

Step 8
The T-Mobile Communication Centre will detect the connected
device. The detection usually takes several seconds.
When your device is visible in the list, select it by clicking the mouse
and press Finish. In the event of any problems with the detection we
recommend that you press Back button, disconnect the device,
reconnect it again and repeat the detection process.
Step 9
This step installs the connected device and sets up the Internet
connection through GPRS.
Note: If you are prompted by Windows to confirm the drivers
installation without digital signature, confirm the prompt by
clicking Yes!
Press Close.
Now your computer is ready for the connection to the Internet over
T-Mobile GPRS service (APN Internet).
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