It depends where in the template. I’d start by searching for the tags you used > “drop down menu”. Put it in the search box.
It also depends on what you want this “dynanmic dropdown menu” to display.
i want it to display my pages at the top level and subpages as drop downs, is that possible?
Read here once: http://wordpress.org/support/topic/51942
Is that what you’re looking for basically? If you click on that guy’s site link for the instructions and view his menu at top…it drops down with submenus included.. =) Well, for the “Blog” one anyway…
spencerp