USB_ModeSwitch is a little script to help switch multi-mode USB devices between modes. Mostly it's for 3g wireless modems which load initially as a usb drive with the Windows drivers. Compatible with the Huawe E220 and E169.
Article on how to get the Huawei E169 running on the EEE PC (a Linux distro). Includes very detailed instructions including links to USB_ModeSwitch.