Do you mean having your products categories accessible from the header?

If so, I think there are some good mods you can install such as

http://www.zen-cart.com/index.php?ma...roducts_id=476

It's worth a try. Remember to backup before adding any mods.

I might even like to put those links in the solid portion of the grass but darned if I know how....
If you want menu integrated into your header graphics, then you'll definitely need to slice your graphics up with photoshop once you added the menu items in the graphics. Make those slices into a link afterwords.

I hard coded my menu with simple javascript rollover. You can find the link in my sig, hopefully, this is what you're looking for.