Grazie!!!
questo è il css (un pezzo... mancano le parti per il testo e i link)
body{
background: #FFFFFF;
margin: 0 0 0 0;
font-family: verdana, Geneva, Arial, Helvetica, sans-serif;
color: #000000;
font-size : 0.8em;
text-align: center;
}

#principale {
text-align: center;
top: 0px;
left: 0px;
width: 770;
margin: 0 auto;
}

#testata {
width: 770;
height: 65;
margin: 0 auto;
}

#loghino {
position: absolute;
top: 12;
left: 125;
z-index: 1;
}

#testa1 {
margin-top: 0;
float: left;
left: 0px;
top: 0;
width:147;
height: 44;
}

#testa2 {
float: left;
left: 147;
top: 0;
width: 461;
height: 44;
}
#testa3 {
float: left;
top: 0;
width: 162;
height: 44;
}

#testa4 {
float: left;
text-align: left;
width: 162;
height: 21;
}

#testa5 {
float: left;
width: 446;
height: 21;
align: right;
}

#testa6 {
float: left;
width: 150;
height: 21;
}



#colsx {
clear: left;
float: left;
left: 0px;
width: 150;
height: 200;
background-image: url(../pix/sol_t04.gif);
layer-background-image: url(../pix/sol_t04.gif);
background-repeat: repeat-y;
}

#contenuti {
padding-left: 5;
clear: right;
text-align: left;
width: 615;
}


e questa è la pagina.... è il template di un CMS, per cui alcuni pezzi sono degli include

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><title>Manuale</title>
{metaname}
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<LINK REL="stylesheet" TYPE="text/css" href="style/{stile}">
</head>

<div id="body">
<%include file=include/t1.txt%>
<div id="principale">
<div id="colsx">

</div>

<div id="contenuti"><div class="testo">{testo}</div></div>


</div>

<%include file=include/redaf.txt%>

</div>
</html>