I installed Ubuntu 8.04 desktop edition on this system.
Below I outline my troubles and solutions.
There is at this time no way to adjust the backlight intensity. We are waiting for Nvidia to release something to fix this problem.
You can, in the mean time, sort of adjust the screen intensity using the 'nvidia-settings' utility.
hciconfig hci0 reset
to /etc/rc.local
I used the SYMCMOS.EXE utility to modify the BIOS to enable the VT bit.
Specifically you need to set reg 02D3 to 0001
this link tells you what to do
In order to use my audio headset I used one of those little USBaudio plugins and used the usbaudio output to plug in the headset audio.
The microphone input via the microphone jack works correctly.
The internal speakers work fine.