The correct paths should point the location of the CSSMenuWriter folder from this page. If you have the CSSMenuWriter folder in your site root, and the template is in the templates folder then the paths should look like this:
With the rest of the folder and files names after this.
Does the page preview with the menu ok, or are there problems there? If you can please post back with a page that has the menu on it as well as a copy of your template file, I can take a look at these to see if I can spot any issue.