upload file not working !!

i have written two programs to upload files through JSP. but it is not working. please see if u could help
cliet prog:
<html>
<head>
<title>New Page 1</title>
</head>
<body>
<form method="POST" ENCTYPE="multipart/form-data" action="upload.jsp">
<p><input type="file"><input type="submit" value="upload" name="B1">
<input type="reset" value="Reset" name="B2"></p>
</form>
</body>
</html>

server prog:
<%@ page import="com.oreilly.servlet.MultipartRequest" %>
<%@ page import="java.util.*" %>
<%@ page import="java.io.File.*" %>
<html><body>
<%
MultipartRequest mreq = new MultipartRequest(request,"c:/upload/ ");
out.println("rrr");
%>
</body></head>
thanx in advance.