Am I just late to the ballgame? I just learned about this very cool little app called "ProfileCare". I did a search on this and the t600 forum and found nothing. Will set profiles - timed and manual - that control sound, display, turning on or off bluetooth, keyboard backlight, auto-dimming... you name it. I recommend checking it out if you haven't already.

http://mytreo.net/downloads/details-482.html?ProfileCare