ни верю что не получается
<html >
<head>
<style>
body{margin:0;overflow-y: hidden}
#fixDiv{position: absolute;top:10px;left:0px;width:200px;background-color:gray;border: solid 1px black;font-siza:14px}
#contentBody{height: 100%;overflow: auto}
</style>
</head>
<body>
<div id=contentBody>
qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>
qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>
qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>
qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>
qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>
qeqewq<br>
qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>
qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>
qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>
qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>
qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>qeqewq<br>
qeqewq<br>
</div>
<div id=fixDiv>фиксированное поле</div>
</body>
</html>
З.Ы. вместо top используй bottom кажись, ну не помню я точно, это для осла мсие оперы, и поперечный скол убери тож