[maemo-developers] some more dev questions related to my libicd_policy_home_network.so project

[From: Jonathan Wilson]

1.What is the best place to store configuration information on the N900? 
And where can I find documentation and examples of storing such 
configuration information for my plugin? (in this case I will have a 
control panel plugin which sets a value and the ICD policy plugin retrieves it)

2.Is there an example of how to produce a control panel plugin?

and 3.Is there an example of how to produce a dialog box and drop-down list 
similar to the dialog box that lists all the different available internet 
connections?
I need to know how to create the dialog, how to set its title, how to 
create the dropdown list, how to add buttons to the dropdown list and how 
to respond to button presses/item selections (and then how to close the 
dialog after doing what I need with the button press)

I also need to match a piece of data with each button/list item and to 
retrieve that data when the button is pressed.

With so much of the UI of the N900 closed, its hard to know where to look 
to find suitable code examples for UI work.