Merhaba aşağıdaki gibi
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<style type="text/css">
body {
background-image: url(file:///C|/Documents%20and%20Settings/Administrator/Desktop/4.jpg);
width: 100%;
height: 100%;
}
</style>
</head>
<body>
</body>
</html>