The xampp issue could be a port conflict, i would seek help in the apache friends forum for issues with xampp:
http://www.apachefriends.org/f/viewforum.php?f=34
when i view your linked page, i don't see any change to the menu.
but for the menu to display in the main body, you need to move the menu div inside the outer wrapper div.
If you are having trouble with this, I will need to be able to see the problem in order to tell what may be wrong.