Open FrontPage and select the file menu and the open web option.  Select your web folder from the list or type in your entire web address, including http:// in the folder name text box. Then access your web folder by entering your password into the password box.

Step Two

Open the page where the the background image will appear. Select the format menu and the background option.

Step Three

Check the use background image box to select your background. Use the browse button and then the select a file button to search for your background file.

Step Four

Save your page.  When you save your page, you will be prompted to save your image.