How to Numbering each section using Word Automation?

[gemmountain]

Hi, does anyone know how to use Word Automation to insert page numbers for each section in a Word document, and the numbering scheme of each section is independent, not the same as previous?

Suppose that my Word document have 3 sections:
Section 1: 3 pages
Section 2: 2 pages
Section 3: 4 pages

So i want my pages number are:
The first 3 pages (section 1) page number is 1,2,3
next 2 pages (section 2): number 1, 2
last 4 pages (section 3): number 2,3,4,5

i use C# Visual Studio 2005, Office 2003 and Microsoft Office 11.0 Object Library
Thank you so much!

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Sorry if you feel difficult to understand what i say, i'm not good at English :(