How to show multiple node types in a view?

Hi everyone,

I have a view showing several content types and I want this view to show also users (filtered by their role).

The problem is that when I create a view, Drupal asks me what I want to show, and the available number of choises is only one. Do you know if there's a module which allows me to selects more options in the "show" tab when I create a new view (in this case I'd select "content" and "users"?

Thanks a lot!