[Qt-mobility-feedback] Example Publish&Subscribe for display settings?

[Tico Ballagas]

I'm having difficulties wrapping my head around using P&S to control gconf settings.  Specifically, I'd like to change the display sleep and dim timeouts on the N900 while my QML application is running (using sensors for input).  I found the following example for subscribing in QML: 

http://doc.qt.nokia.com/qtmobility-1.0/battery-charge.html

how would I modify the display sleep settings?  Ideally I would do this is a cross platform (maemo + symbian) way...  Any tips?

Best
-Tico