Okay, it took a bit of fiddling, but I was able to get what you said you wanted: no repeating company info, and page 2 margins moved over to the left. Here's how I did it.
- Click on company info. Notice that it's in a box with blue squares. That indicates it's defined as a master object. Master objects repeat on every page, which is why you also saw this info on page 2. To change this object's behavior, click on Format > Advanced > Move Object to Page. No more blue boxes. No more master object behavior. No more repeating on subsequent pages.
- As for the margins, that was trickier. Assuming you haven't created a page 2 yet (if you have, delete it), put your cursor at the end of page 1, after your name. Click on Insert > Page Break. You should now have a page 2. Click on the document inspector > Document button. Notice the left-hand margin is set at 2.5 inches. Change that to 1.0 inches. Now we want to select all the text on page 1. Put your cursor before Address Name, and drag it down the page to the end of page 1, just after your own name. The entire page, except for objects, should be selected. Go up to the ruler (if the ruler's not visible, click on View > Show Rulers). At the 1.0 inch mark, you'll see a little downward-pointing triangle with a tiny horizontal bar on top of it. Click on that triangle (not the bar), and drag it to the 2.5 inch mark on the ruler.
What have we got? The page 1 margin is now 2.5; page 2 margin is 1.0. That seems to be what you wanted. If you like this document the way it is, click on File > Save As Template, then give it a name like DCM's Business Letter, or whatever you want to call it. Once you've saved it as a template, it will be shown in the My Templates section of the template browser.
Hope this helps.
-Dennis