You do not have to apply any code. When you import your template into Site Sculptor, all editable regions will be added to the CMS for you automatically.
Does this answer your question?
As for your menu, as stated in the tutorial i mentioned above...
Creating your menu
If your custom design has a unique navigation menu design that you want to make sure Site Sculptor uses, you will need to create this menu as a CSS Menu Writer preset. CSS Menu Writer is another Dreamweaver extension that is included in the WebAssist Extension Library or Super Suite.
For more information on using CSS Menu Writer to create your menu see the CSS Menu Writer Support page.
If you do not require a specific menu design, Site Sculptor includes some preset designs that can be changed in Theme-It to match any color. These menus are designed to fit well with most web designs and should be good additions to most sites.
So, if your menu is very unique to your design, you'll need to use CSS Menu Writer to create it as a new preset. Then, in the Add Layout Wizard you can choose your menu and your Dreamweaver template for your new Site Sculptor site.
To make things easier, i would recommend trying one of the preset menus that Site Sculptor's Add Layout Wizard provides. These are all CSS-based, and you can change the menu to have any color you like.