Tag <form:input do spring não está funcionando

Assuntos Gerais
#1

Estou tentando montar um form mas as tags do spring não funcionam, mostra o erro

org.apache.jasper.JasperException: An exception occurred processing JSP page /WEB-INF/view/acessoGerente.jsp at line 16

13: 		<table>
14: 			<tr>
15: 				<td>CPF :</td>
16: 				<td><form:input path="CPF" maxlength="11"/></td>
17: 			</tr>
18: 			<tr>
19: 				<td>Nome :</td>


Stacktrace:
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:504)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:409)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:336)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)
	org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
	org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1060)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:798)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:647)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:552)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)


root cause

o cabeçalho da página está assim:

<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Gerência</title>
</head>

Me disseram que deveria colocar TLD, mas não sei o que é isso. Como conserto esse erro?

#2