MS Word 2003

To get started you need to open the menu "Insert" and then select "page Numbers".
Further, in the opened window, select the numbering options (alignment, location of the digits). In that case, if you need to change additional settings, click on the button "Format".
In this window you can select the format of numbers or letters that will be used in the numbering on your page. You can also use the "Start with", allows you to change the number at which to begin numbering.
MS Word 2007

In this version of MS Word to number the pages even easier. First you need to select the category of the "Insert" and then click on the list of "page Numbers". In it you will be able to choose the location of the numbers on the page format.