Go to master pages, draw text box, go to type, insert special character, markers, next page number.
Click on the page you want your numbers to start on, right click on the page and uncheck allow document pages to shuffle and allow selected spreads to shuffle. Then right click and choose numbering and selection options.
Change start page numbering to whatever you want. eg. 1
Then drag [none] master to the pages you dont want numbering.
Lily 