Hello, you didn't mention which office version you are using?
Assuming you are using Office 2007, this can be done by setting pages with Section breaks. Here is how it can be done.
1: Open your report, click on the end of the first page
2: Click Page Layout
3: Click Insert Break -> Section Breaks -> Next Page
4: Once onto the next page - Double Click on the footer
5: While on the footer (Design header,Footer Tools will open)
6: Click on the icon Link to Previous
This will remove the link of the footer Page number from the previous page. Delete the two 1,2 footer page numbers.
7: Now click on the footer of Page 3 and insert Page number.
8: Click Format Page Number
9: Click Page Numbering --> Start from: 3 (where 3 is the starting page number).
That's all you need to do
If you are not sure about any step please let us know. I would also advise you to try this first on empty word document and then do it on your report.