Using Smartwi Connection Utility; Using The Cingular Wwan Connection - Sony VAIO VGN-T300 Series Connection Manual

VAIO® Computer Wireless Information
Using Wireless Connection Utility
To use the wireless connectivity features and begin using e-mail or connecting to
the Internet, simply click the desired button: Cingular Wireless (for WAN
connectivity), WLAN, or Bluetooth®.
Wireless Connection Utility main screen
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