Four more links will appear. Drag the mouse down and click on Identity.
Fill in the information as shown. Click on Messages Next.
This page makes sure you DON'T send HTML mail. This is important because not all people can read HTML mail. You have to decide if you wish to quote the original message or not. Be sure to click on more options and fill out that page too. Click on ok to take you back to the main option page. Click on Mail Server.
Click "OK" to go to the next page, or click "Cancel" to go back.