One of my menu items I have, I want to make it so that only the child links are clickable, and the parent is not. Is there a way to make the parent a sort of "Dummy Link" just to set a hierarchy for a menu?
The Special Menu Items module will do exactly that for you:
Special menu items is a Drupal module that provides placeholder and separator menu items.
A placeholder is a menu item which is not a link. It is useful with dynamic drop down menus where we want to have a parent menu item which is not linking to a page but just acting as a parent grouping some menu items below it.
If you don't want to use another module:
In your custom module you could implement hook_menu_alter() (Or if you created the menu using hook_menu(), you could use this same approach there). You could probably make the parent item a MENU_CALLBACK that does nothing e.g. it could
return TRUE or something like that.
http://drupal.org/project/menu_firstchild Also provides similar functionality with the exception that the main link s given the link of the first child so that you preserve usability.