CRUCIAL: Menu Bar Bug in Internet Explorer

Hello,
I am have a super annoying problem with my vertical menu bar in internet explorer.
The site works fine in Firefox, and Safari but in IE it doesn't.

The submenus are not aligned with the menus, and this is a real problem because the submenu stays in one spot, so as you get lower down the page, you lose the ability to click on some links.

This is urgent as the site is currently up and there are many business partners who are going to view the site tomorrow for collaboration purposes.

The site is http://www.platinumprostudies.com, and below is the CSS for my Menu Bar, thank you. Oh, and also I've tried about every fix offered on this site and none of worked so far.

@charset "UTF-8";

/* SpryMenuBarVertical.css - version 0.6 - Spry Pre-Release 1.6 */

/* Copyright (c) 2006. Adobe Systems Incorporated. All rights reserved. */

/*******************************************************************************

LAYOUT INFORMATION: describes box model, positioning, z-order

*******************************************************************************/

/* The outermost container of the Menu Bar, a fixed width box with no margin or padding */
ul.MenuBarVertical
{
margin: 0;
padding: 0;
list-style-type: none;
font-size: 100%;
width: 8em;
}
/* Set the active Menu Bar with this class, currently setting z-index to accomodate IE rendering bug: http://therealcrisp.xs4all.nl/meuk/IE-zindexbug.html */
ul.MenuBarActive
{
z-index: 1000;
}
/* Menu item containers, position children relative to this container and are same fixed width as parent */
ul.MenuBarVertical li
{
margin: 0;
padding: 0;
list-style-type: none;
font-size: 100%;
position: relative;
text-align: left;
width: 150px;
background-color: #AB7D0D;
}
/* Submenus should appear slightly overlapping to the right (95%) and up (-5%) with a higher z-index, but they are initially off the left side of the screen (-1000em) */
ul.MenuBarVertical ul
{
margin: 0% 0 0 95%;
padding: 0;
list-style-type: none;
font-size: 100%;
position: absolute;
z-index: 1020;
width: 150px;
left: -1000em;
top: 0;
}
/* Submenu that is showing with class designation MenuBarSubmenuVisible, we set left to 0 so it comes onto the screen */
ul.MenuBarVertical ul.MenuBarSubmenuVisible
{
left: 0;
}
/* Menu item containers are same fixed width as parent */

ul.MenuBarVertical ul li
{
width: 16em;
}

/*******************************************************************************

DESIGN INFORMATION: describes color scheme, borders, fonts

*******************************************************************************/

/* Outermost menu container has borders on all sides */
ul.MenuBarVertical
{
border: 1px solid #D6AC4B;
}
/* Submenu containers have borders on all sides */
ul.MenuBarVertical ul
{
border: 1px solid #AB7D0D;
}
/* Menu items are a light gray block with padding and no text decoration */
ul.MenuBarVertical a
{
display: block;
background-color: #D6AC4B;
padding: 0.5em 0.75em;
color: #000;
text-decoration: none;
text-align:center
}
/* Menu items that have mouse over or focus have a blue background and white text */
ul.MenuBarVertical a:hover, ul.MenuBarVertical a:focus
{
background-color: #466C65;
color: #FFF;
}
/* Menu items that are open with submenus are set to MenuBarItemHover with a blue background and white text */
ul.MenuBarVertical a.MenuBarItemHover, ul.MenuBarVertical a.MenuBarItemSubmenuHover, ul.MenuBarVertical a.MenuBarSubmenuVisible
{
background-color: #466C65;
color: #FFF;
}

/*******************************************************************************

SUBMENU INDICATION: styles if there is a submenu under a given menu item

*******************************************************************************/

/* Menu items that have a submenu have the class designation MenuBarItemSubmenu and are set to use a background image positioned on the far left (95%) and centered vertically (50%) */
ul.MenuBarVertical a.MenuBarItemSubmenu
{
background-image: url(SpryMenuBarRight.gif);
background-repeat: no-repeat;
background-position: 95% 50%;
}

/* Menu items that are open with submenus have the class designation MenuBarItemSubmenuHover and are set to use a "hover" background image positioned on the far left (95%) and centered vertically (50%) */
ul.MenuBarVertical a.MenuBarItemSubmenuHover
{
background-image: url(SpryMenuBarRightHover.gif);
background-repeat: no-repeat;
background-position: 95% 50%;
}

/*******************************************************************************

BROWSER HACKS: the hacks below should not be changed unless you are an expert

*******************************************************************************/

/* HACK FOR IE: to make sure the sub menus show above form controls, we underlay each submenu with an iframe */
ul.MenuBarVertical iframe
{
position: relative;
z-index: 1010;
filter:alpha(opacity:0.1);
}
/* HACK FOR IE: to stabilize appearance of menu items; the slash in float is to keep IE 5.0 from parsing */
@media screen, projection
{
ul.MenuBarVertical li.MenuBarItemIE
{
display: inline;
float: left;
background: #83AEA5;
}
}
#MenuBar1 {
color: #0000FF;
}
nowthatyouarea {
font: Verdana;
font-size: 13px;
color: #000;
}