How To Set Screen Brightness in Ubuntu 10.4

root@james-laptop:~# cat /proc/acpi/video/VID1/LCD/brightness
levels: 0 6 13 20 26 33 40 46 53 60 66 73 80 86 93 100
current: 100

Set brightness based on levels

root@james-laptop:~# echo 73> /proc/acpi/video/VID1/LCD/brightness

Thats it