Posición con div

[Wilfred]

Código:

@charset "utf-8";
/* CSS Document */

BODY {
    font: 8pt Verdana, Geneva, Arial, Helvetica, sans-serif;
    text-align: center;
    background-color:#000000;
	color:#FFFFFF;
	font-weight:bold;
	
}
A:link {
color:#FF0000;
text-decoration:none;
}

A:hover {

color: blue;
cursor:crosshair;

}
A:visited {
color:#FF0000;
text-decoration:none;
}
 .linkmenu a:visited {
color:#FFFFFF;
}

.linkmenu a:link {
color:white;
}

.linkmenu a:active {
color:blue;
}


#contenedor{
    text-align: left;
    width: 595px;
    margin: auto;
	border: 1px solid #FF0000;
}
#cabecera{
    background-image:url(header.png);
    background-repeat:no-repeat;
	background-position:top;
    height:103px;
	width:auto;
}



#principal{
      text-align: left;
    width: 595px;
    margin: auto;
	border: 1px solid #FF0000;
	background-image:url(contenido.gif)
}

#izquierda{
      text-align: left;
    width: 200px;
    margin: auto;
	border: 1px solid #FF0000;
	background-image:url(contenido.gif)
}
#pie{
    background-color: #cccccc;
    padding: 3 10 3 10px;
    text-align:right;
    clear: both;
} 

#menu {
	 background-image:url(menu.png);
    background-repeat:no-repeat;
	background-position:center;
    height:30px;
	width:auto;

		 
} 
 #sidebar {
    width: 25px;
    padding: 10px;
    float: left;
    margin:auto;
}
#center {
width:75px;
float:right;
padding: 10px;
margin:auto;
text-align:left;
}
#principal2{
      
    width: 200px;
    
    float:left;
	position:inherit;
}



.Estilo1 {                          
	font-size: 12pt; 
	font-family: "Courier New", Courier, monospace;
	font-weight: bold;
	color: #FFFFFF;
}

.Estilo2 {
	font-size: 24pt;
	color: #FF0000;
	font-family: "Courier New", Courier, monospace;
	font-weight: bold;
}

.Estilo3 {
	font-size: 22pt;
	color: #FFFFFF;
	background-image:url(header-noticas.png);
	background-repeat:no-repeat;
	background-position:center;
	text-align:center;
}
.Estilo4 {
font-size:11px;
font-family:"Courier New", Courier, monospace;
font-style:italic;
color:#FFFFFF ;
}

.Estilo5 {
font-size:11px;
color:#FF0000;
}

h1 {
font-size: 22pt;
	color: #FFFFFF;
	background-image:url(header-noticas.png);
	background-repeat:no-repeat;
	background-position:center;
	text-align:center;
	font-family: "Courier New", Courier, monospace;
	font-weight: bold;
}

h2 {
font:"Courier New", Courier, monospace;
color:#FFFFFF;
font-size:12px;


}
h3 {
font-size:20px;
font-family:"Courier New", Courier, monospace;
font-weight:bold;
}

ahí mi css :D

Gracias por la ayuda!