You're going to have to divide your document in two sections with different page layouts and headers. Here's how:
1. At the top of the second page, click the Insert->Break menu item.
2. Select Next Page under Breaks.
3. Click OK.
4. Move the cursor to the top of the first page.
5. Click the File->Page Setup menu item.
6. Set the Left Margin to your 2 inches.
7. Make sure the Apply To list box says "This Section."
8. Click OK.
9. Move your cursor into the second section and repeat steps 4-8, this time giving the section a 1-inch left margin.
10. Click the View->Header and Footer menu item.
11. On the menu that pops up, find the button that says "Same as Previous Section" when you hover the cursor on it and deselect it.
12. That disconnected the header. Now move your cursor down into the footer and do the same thing.
13. Move the cursor back into the header and type in "Page " where you want it to appear.
14. Click the menu button with the # sign on it. This should put a page number field next to the "Page " you just entered. This number will automatically update for each subsequent page.
That should do it. Hope that helps.