Actually the page numbers are still there, they just start on page two. If you would like them to start on page one (on all your new files) then open up your default file. Go to page two (you may have to add more measures to get a page 2) and using the text tool select the page number. Go to "Frame Attributes" under the "text" menu. Under "Attact to" you can select all pages and now your page number will be on all pages.
If you don't want the copyright to be there, delete that first.This is one way.
If you want to create a page number from scratch, then create a text block where you want your page number. Go to the "text" menu, "insert" and select "page number." Then you can go to "Frame Attributes" and select which pages you want the page number to show on.
If you have any questions, please feel free to e-mail me.
Shane