I have a site configured to use submenus on the main navigation(left), these are all working fine,
I don't know if it's a plugin as I took it over from someone else so ill describe it.

Menu categories are set by using: CategoryName_
then following items are set using: CategoryName_SubCategory

What I need is to change the Category menus to links rather than sending to index.php and opening the Category list

Setting the link to anywhere makes a mess, so can anyone tell me how to point it to a location?

PS dont be scared to throw PHP at me.