how to push view to view based application?

Question

HI

I am working with View Based application, i need some suggestions from you,

1) is it possible to push a view using navigationcontroller in view based application.

2)when should we need to use navigationbased application,viewbased application,windowbased application.

3)in viewbased application i know we can addsubview, but can we push the view like navigation based app?

please give your suggestions

thanks.