Hi sandip,
I would advise you to take a look at this page and the video link in the page.
there is also docs that can be for under you install.
These documents and videos could answer your questions, they are relatively self explanatory.
video :http://nbstore.codeplex.com/wikipage?title=Step%20by%20step%20guide%20to%20a%20working%20store&referringTitle=Home
install docs : /nbstore/documentation/documentation.html
Geoff