help modifying grid-a-licious wordpres theme (easy)

I am modifying the theme grid-a-licious for wordpress [login to view URL] I want to make the menu on the top horizontal and show only the pages (created inside wordpress). No tags, search, categories. And be visible all the time (unlike the default that is displayed when clicking on navigation. I want to achieve this without loosing the dynamic linking with worpress (if I add pages in wordpress I want them to appear in the menu) I also want to get rid of the comments column on all pages