Hey,
First of all..I got to congratulate you on joining the good side..Nokia, and leaving the dark side..any other brand!
If this is what you mean, changing basic phone settings, eg:
Backlite
Time
Look/Theme
Go to (on the phone) Menu > Tools > Settings > Phone Settings > General/Standby/Display.
For Backlite timeout:
Menu > Tools > Settings > Phone Settings > Display > Light time out
Now just edit it.
Hope this helps,
Tal
I own a 5210, 5140 and now..the new 3250. Symbian 60 Series OS 3.0 ..just the best.