Menu writer does not allow for setting a unique background image to each menu item. To accomplish this you would need to edit the menu and apply an inline style, for example:
<li><a href="index.php" style="background-image:url(images/myname.gif)">Home Page</a></li>
Menu writer also does not support push down menus, only fly out menu, a push down menu would need to be javascript based. you can accomplish this using a Dreamweaver Spry Accordion.