There is also a button for presentations - but I don't have a projector
here, so I'm not sure what it does except what Vista Help & Support says -
Adjust settings before giving a presentation
Presentation settings are options on your mobile PC that you can apply when
giving a presentation. If you've ever had your display turn black during a
presentation, you'll appreciate that you can automatically turn off your
screen saver every time that you give a presentation.
When presentation settings are turned on, your mobile PC stays awake and
system notifications are turned off. You can also choose to turn off the
screen saver, adjust the speaker volume, and change your desktop background
image. Your settings are automatically saved and applied every time that you
give a presentation, unless you manually turn them off.
To turn on presentation settings
You can turn on presentation settings by using one of the following methods:
Connect the mobile PC to a network projector.
Connect the mobile PC to an additional monitor.
Then, in the New Display Detected dialog box, select the Turn on
presentation settings check box, and then click OK.
Click to open Windows Mobility Center.
Then, on the Presentation Settings tile, click Turn on.
To turn off presentation settings
Presentation settings automatically turn off when you disconnect your mobile
PC from a network projector or additional monitor, and when you shut down or
log off from your mobile PC. Or, you can manually turn off presentation
settings:
Click to open Windows Mobility Center.
On the Presentation Settings tile, click Turn off.
To customize presentation settings
Click to open Windows Mobility Center.
On the Presentation Settings tile, click the Change Presentation Settings
icon.
In the Presentation Settings dialog box, adjust settings for giving a
presentation, and then click OK.
See Also
Using Windows Mobility Center
Giving a presentation over a network
Set up multiple monitors