Hola, gracias por responder tan rápido, aqui dejo el código del browser IE pues no veo nada raro.
Código HTML:
<table border="1" cellpadding="0" cellspacing="0" width="100%" height="100%" align="center">
<tr> <td>
<table border="1" cellpadding="0" cellspacing="0" width="1024" height="100%" align="center">
<tr>
<td colspan="2"><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Login tecnoinform.pxlnet.info</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<body>
<div align="center"><img src="images\tecnoinform.gif" width="1024" height="200" border="0"></div>
</body>
</html></td>
</tr>
<tr><td colspan="2" width="1024" height="60"><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Menu</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<link rel="stylesheet" href="style.css" type="text/css" />
</head>
<body>
<div id="foxmenucontainer">
<div id="foxmenu">
<ul>
<li><a href="" title="" class="current">Inicio</a></li>
<li><a href="" title="">Tutoriales</a></li>
<li><a href="" title="">Software</a></li>
<li><a href="" title="">Curiosidades</a></li>
<li><a href="" title="">Innovaciones</a></li>
<li><a href="" title="">Photoshop</a></li>
<li><a href="" title="">Videos</a></li>
<li><a href="" title="">Contacto</a></li>
</ul>
</div>
</div>
</body>
</html>
</td></tr><!--AQUI VA EL MENU-->
<tr>
<td width ="150">
HOLA
<form name="login-form" id="login-form" method="post" action="./index.php">
<table width="150" align="left" border="0" cellspacing="0" cellpadding="0">
<tr>
<td>
<fieldset>
<legend>Login Porfavor</legend>
<dl>
<dt><label title="Username">Usuario: </label></dt>
<dd><input tabindex="1" accesskey="u" name="username" type="text" maxlength="30" id="username" /></dd>
</dl>
<dl>
<dt><label title="Password">Password: </label></dt>
<dd><input tabindex="2" accesskey="p" name="password" type="password" maxlength="15" id="password" /></dd>
</dl>
<ul>
<li><a href="./register.php" title="Register">Registrar</a></li>
<li><a href="./lostpassword.php" title="Lost Password">Olvidó el password?</a></li>
</ul>
<p align="center"><input tabindex="3" accesskey="l" type="submit" name="cmdlogin" value="Ingresar" /></p></fieldset>
</td>
</tr>
</table>
</form>
HOLA 2
</td><!--COLUMNA DE LOGIN-->
<td width="874" height="100%">
<iframe width="100%" height="100%" name="mainframe" id="mainframe" frameborder="no" src="" allowtransparency="no" scrolling= "auto" valign="top">
</iframe>
</td>
</tr>
<tr><td colspan="2" width="1024" height="60"><div id='footer' align="center">Copyright 2008 © tecnoinform.pxlnet.info</div>
</td> </tr><!--PIE-->
</table>
</td>
</tr>
</table>
</body>
</html>