Sony Ericsson T200-series (T230, T290) modem driver. Use it to use the cell phone's internet connection on your computer.
If used on Windows 9x, use the associated program to install (setup9x.exe)
On XP, install it through the Add New Hardware Wizard, and select the corresponding COM port associated to your phone.
Obs: do not change the speed in bps of the port, as it sometimes lead to the phone not being detected.