How to reuse properties ->setting.setting of one project into anather project

You have to stock all the settings in a *.ressource or a resex file and access it from your application using the ressources manager

http://msdn.microsoft.com/en-us/library/ekyft91f(VS.80).aspx

or you can even compile the ressources file in an assembly satellite and then you can add a reference to it from  applications

This is  a walkthrough of how to load ressources from a given satellite assembly

http://msdn.microsoft.com/en-us/library/cc668131.aspx