WordPress MU

Hi folks, Im new in wordpress also in all this css. I installed a theme and in firefox the nav bar looks alright, but in Internet Explorer it's a mess,

can pleas a benevolent sould help me, I think its EASY, but I dont ahve the knowledge:

here is the site: http://www.reinaenluz.com

THABKS YOU VERY MUCH, GREETINGS FROM ARGENTINE, enrique

and ehre the code:

***************************************************
/*
Theme Name: Lila
*/

/* Begin Typography, Colors & Layout structure */
body {
font-size: 62.5%; /* Resets 1em to 10px */
font-family: Arial;
background: #b673e5 url(images/fondo.jpg) repeat-x;
text-align: center;
}

.padding { padding:5px }

#wrapper {
width: 573px;
margin: auto;
}

#page {
background-color: #ffffff;
text-align: left;
width:531px;
color: #0066ff;
font-size: 1.1em;
}
#top {
background: url(images/topbg.gif);
vertical-align: middle;
margin-bottom: 6px;
padding-right: 6px;
height:54px;
color:#4A3365;
}

#topimg {
background: url(images/topimg.gif) no-repeat;
width: 90px;
height: 54px;
float:left;
}

#about {
padding-top: 10px;
color: #ffffff;

}

#header {
text-align:right;
margin-bottom:6px;
padding-right:5px;
height:126px;
color: #ffffff;
}

#header h1 {
font-size: 2.3em;
font-style:italic;
font-family:arial;
font-weight: 400;
display:inline-block;
padding-top:80px;
padding-bottom:0px;
color: #ffffff;
}

#nav {
background:#ffffff;
height: 30px;

}

#nav ul {
padding:0;
margin:0;
list-style-type:none;
}

#nav li {
font-weight:bold;
list-style-type:none;
}

#nav a {
float:right;
text-decoration:none;
padding: 8px;
color:#342149;
border-left:1px solid #4A3365;
}

#nav a:hover {
background:#9933ff;
color: #fff;
text-decoration:none;
}

#disclaimer {
background:#67527F url(images/navbg.gif) repeat-x;
padding: 5px;
text-align:center;
clear:both;
height:40px;
color: #ffffff;
}

#bnavigation {
background: #9583A9 url(images/bnavbg.gif) repeat-x;
border-bottom:6px solid #4A3365;
}

#bnavigation ul {
padding:0;
margin:0;
list-style-type:none;
}

#bnavigation li {
border-bottom: 1px dotted #6A5185;
display:block;
color:#594373;
padding:3px 0 3px 5px;
}

#bnavigation li:hover {
background-color:#D0CAD7;
}

#bnavigation ul ul li {
padding:3px 0 3px 15px;
}

#bnavigation h2 {
color:#685084;
padding: 3px;
}

#bnavigation a {
text-decoration:none;
color:#3D3148;
}

#bnavigation .navleft {
width: 259px;
float:left;
}

#bnavigation .navright {
width: 259px;
float:left;
margin-left:10px;
}

#bnavigation .clear {
clear:both;
}

#content {
font-size: 1.2em
}

.posthead {
background:#685380;
padding:6px;
font-size: 1.0em;
color:#B09CC9;
}

.widecolumn {
line-height: 1.6em;
}

.narrowcolumn .postmetadata {
text-align: center;
}

.alt {
background-color: #725E89;
}

#footer {
background-color: #eee;
}

small {
font-size: 0.78em;
}

h1, h2, h3 {
font-size: 1.8em;
}

h1 {
font-size: 4em;
}

h2 {
font-size: 1.4em;
color:#EAE4F1;
}

h2.pagetitle {
font-size: 1.6em;
}

#sidebar h2 {
font-family: 'Lucida Grande', Verdana, Sans-Serif;
font-size: 1.2em;
}

h3 {
font-size: 1.3em;
}

h1 a:hover{
text-decoration: none;
color: #B09CC9;
}

h1 a {
text-decoration:none;
}

h2 a:visited, h3, h3 a, h3 a:visited {
color: #B09CC9;
}

h2 a {
color:#E1D6EE;
}

h2, h2 a, h2 a:hover, h2 a:visited, h3, h3 a, h3 a:hover, h3 a:visited, #sidebar h2, #wp-calendar caption, cite {
text-decoration: none;
}

.entry p a:visited {
color: #B19ACB;
}

.commentlist li, #commentform input, #commentform textarea {
font: 0.9em 'Lucida Grande', Verdana, Arial, Sans-Serif;
}

.commentlist li {
font-weight: bold;
}

.commentlist cite, .commentlist cite a {
font-weight: bold;
font-style: normal;
font-size: 1.1em;
}

.commentlist p {
font-weight: normal;
line-height: 1.5em;
text-transform: none;
}

#commentform p {
font-family: 'Lucida Grande', Verdana, Arial, Sans-Serif;
}

.commentmetadata {
font-weight: normal;
}

#sidebar {
font: 1em 'Lucida Grande', Verdana, Arial, Sans-Serif;
}

small, #sidebar ul ul li, #sidebar ul ol li, .nocomments, .postmetadata, blockquote, strike {
color: #B09CC9;
}

code {
font: 1.1em 'Courier New', Courier, Fixed;
}

acronym, abbr, span.caps
{
font-size: 0.9em;
letter-spacing: .07em;
}

a, h2 a:hover, h3 a:hover {
color: #fff;
text-decoration: none;
}

a:hover {
text-decoration: underline;
}

#wp-calendar #prev a {
font-size: 9pt;
}

#wp-calendar a {
text-decoration: none;
}

#wp-calendar caption {
font: bold 1.3em 'Lucida Grande', Verdana, Arial, Sans-Serif;
text-align: center;
}

#wp-calendar th {
font-style: normal;
text-transform: capitalize;
}
/* End Typography & Colors */

/* Begin Structure */
body {
margin: 0;
padding: 0;
}

.narrowcolumn {
float: left;
padding: 0 0 20px 45px;
margin: 0px 0 0;
width: 450px;
}

.widecolumn {
padding: 10px 0 20px 0;
margin: 5px 0 0 150px;
width: 450px;
}

.post {
background:#ffffff;
margin: 0;
text-align: justify;
}

#content {
background:#fff;
}

.postinfo {
font-size: 1em;
background:#685380;
padding:4px;
color:#B09CC9;
}

.entry {
padding:5px;
font-size: 0.9em;
border-bottom:5px solid #4A3365;
}

.widecolumn .post {
margin: 0;
}

.narrowcolumn .postmetadata {
padding-top: 5px;
}

.widecolumn .postmetadata {
margin: 30px 0;
}

.widecolumn .smallattachment {
text-align: center;
float: left;
width: 128px;
margin: 5px 5px 5px 0px;
}

.widecolumn .attachment {
text-align: center;
margin: 5px 0px;
}

.postmetadata {
clear: left;
}

#footer {
padding: 0 0 0 1px;
margin: 0 auto;
width: 760px;
clear: both;
}

#footer p {
margin: 0;
padding: 20px 0;
text-align: center;
}
/* End Structure */

/* Begin Headers */
h1 {
margin: 0;
}

h2 {
margin: 0;
}

h3 {
padding: 0;
margin: 30px 0 0;
}

h3.comments {
padding: 10px;
margin: 30px auto 10px;
}
/* End Headers */

/* Begin Images */
p img {
padding: 0;
max-width: 100%;
}

/* Using 'class="alignright"' on an image will (who would've
thought?!) align the image to the right. And using 'class="centered',
will of course center the image. This is much better than using
align="center", being much more futureproof (and valid) */

img.centered {
display: block;
margin-left: auto;
margin-right: auto;
}

img.alignright {
padding: 4px;
margin: 0 0 2px 7px;
display: inline;
}

img.alignleft {
padding: 4px;
margin: 0 7px 2px 0;
display: inline;
}

.alignright {
float: right;
}

.alignleft {
float: left
}
/* End Images */

/* Begin Lists

Special stylized non-IE bullets
Do not work in Internet Explorer, which merely default to normal bullets. */

html>body .entry ul {
margin-left: 0px;
padding: 0 0 0 30px;
list-style: none;
padding-left: 10px;
text-indent: -10px;
}

html>body .entry li {
margin: 7px 0 8px 10px;
}

.entry ul li:before, #sidebar ul ul li:before {
content: "0BB 020";
}

.entry ol {
padding: 0 0 0 35px;
margin: 0;
}

.entry ol li {
margin: 0;
padding: 0;
}

.postmetadata ul, .postmetadata li {
display: inline;
list-style-type: none;
list-style-image: none;
}

#sidebar ul, #sidebar ul ol {
margin: 0;
padding: 0;
}

#sidebar ul li {
list-style-type: none;
list-style-image: none;
margin-bottom: 15px;
}

#sidebar ul p, #sidebar ul select {
margin: 5px 0 8px;
}

#sidebar ul ul, #sidebar ul ol {
margin: 5px 0 0 10px;
}

#sidebar ul ul ul, #sidebar ul ol {
margin: 0 0 0 10px;
}

ol li, #sidebar ul ol li {
list-style: decimal outside;
}

#sidebar ul ul li, #sidebar ul ol li {
margin: 3px 0 0;
padding: 0;
}
/* End Entry Lists */

/* Begin Form Elements */
#searchform {
padding: 4px;
float:left;
margin:0;
}

#sidebar #searchform #s {
width: 115px;
}

#sidebar #searchsubmit {
padding: 1px;
}

.entry form { /* This is mainly for password protected posts, makes them look better. */
text-align:center;
}

select {
width: 130px;
}

#commentform input {
width: 170px;
padding: 2px;
margin: 5px 5px 1px 0;
}

#commentform textarea {
width: 516px;
padding: 2px;
}

#commentform #submit {
margin: 0;
float: right;
}
/* End Form Elements */

/* Begin Comments*/
.alt {
margin: 0;
padding: 10px;
}

.commentlist {
padding: 0;
text-align: justify;
}

.commentlist li {
margin: 15px 0 3px;
padding: 5px 10px 3px;
list-style: none;
}

.commentlist p {
margin: 10px 5px 10px 0;
}

#commentform p {
margin: 5px 0;
}

.nocomments {
text-align: center;
margin: 0;
padding: 0;
}

.commentmetadata {
margin: 0;
display: block;
}
/* End Comments */

/* Begin Sidebar */
#sidebar
{
padding: 20px 0 10px 0;
margin-left: 545px;
width: 190px;
}

#sidebar form {
margin: 0;
}
/* End Sidebar */

/* Begin Calendar */
#wp-calendar {
empty-cells: show;
margin: 10px auto 0;
width: 155px;
}

#wp-calendar #next a {
padding-right: 10px;
text-align: right;
}

#wp-calendar #prev a {
padding-left: 10px;
text-align: left;
}

#wp-calendar a {
display: block;
}

#wp-calendar caption {
text-align: center;
width: 100%;
}

#wp-calendar td {
padding: 3px 0;
text-align: center;
}

#wp-calendar td.pad:hover { /* Doesn't work in IE */
background: #85749A url(images/bnavbg.gif) repeat-x; }
/* End Calendar */

/* Begin Various Tags & Classes */
acronym, abbr, span.caps {
cursor: help;
}

acronym, abbr {
border-bottom: 1px dashed #999;
}

blockquote {
margin: 15px 30px 0 10px;
padding-left: 10px;
border-left: 5px solid #AEA1BD;
}

blockquote cite {
margin: 5px 0 0;
display: block;
}

.center {
text-align: center;
}

hr {
display: none;
}

a img {
border: none;
}

input,textarea {
background:#CBBFD5;
border:1px solid #4A3365;
color:#4A3365;
font-size:1.1em;
}

.navigation {
display: block;
background-color:#594373;
padding:5px 5px 25px 5px;
text-align: center;
margin-top: 5px;
border-bottom: 5px solid #4A3365;
}
/* End Various Tags & Classes*/
******************************************************

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Please do not post the css there - just a link to your site and explain the problem.