eee-control is an easy-to-use utility for controlling Eee PC hardware under Linux. It can toggle hardware (WiFi, Bluetooth, etc.) ON and OFF, lets you configure all hardware hotkeys, enables aggressive powersaving, and more. Almost all Eee PC netbook models are supported to varying degrees.Ubuntu9.04 and higher will support eee-control with out any kernel modification.
Download the deb file from here
after downloading open a terminal
$sudo dpkg -i eee-control_0.9.4_all~jaunty.deb