Multiple projects in iis 7.5

Hi there,

I want to create new configuration in IIS 7.5 MVC 4 which is as below

• Root
  • AdminApp
  • ServicesApp
  • SalesApp

In this configuration I want to share few files and dll among the projects like master pages, css, js files. 

If a user logs into the application then with his session he can go to any of application.

Can any one let me is this a correct approach or not. any sample links will be helpful.