How to put a image on a background behind some text

I am very new with HTML, PHP and CSS. So this is going to be a very 'simple' question.

I am still at the beginning of this webpage I want to try and design just for myself... I just want to know how to put the picture I use behind the text and I still want to use the black background color.

Here is the code I have:


	<title>My Webpage</title>

<body bgcolor="black">

<h1><font face="Forte"
		  <b>Header 1</b>
<h2><font face="Forte"
		  <b>Header 2</b>
<img src="WSBack.jpg" width="1250" height="300">


The image appears under the Words.

Please help? Thanks