in the menu.css file, edit the ul#cssmw li sselector to float left instead of right
ul#cssmw li {
background-image: none;
float: left;
padding: 0 0 0 0;
position: relative;
white-space: nowrap;
z-index: 100;
}
If you use float right on the LI elements, it will start from the right side and build to the left.
to move the menu to the right, create a div around the menu. Set the width to be the totla widtyh of the menu and set it to float to the right.