How do I paste a URL into or onto my main page?

How do I add a graphic linked to another website to my main page? eg: a live local weather condition image. How is this done? How do I control where this is placed on the main page? Any help is greatly appreciated.

Thanks

Yes, I believe thats the way it is set up.

Ok, I went to the admin page, changed the layout, typed in a test entry. Now what do I do? How do I make this appear on my web address as a blog?