490668 Magento Shopping cart script mod

I am looking for someone with experience with Magento shopping cart script. I am not familair with the system yet and need some help with changes. I need a menu that will show the extra pages of content I created in admin. I need the header text changed so my company name is there. I need two graphics removed and two new graphics created. One is on the home page/right side. "Back to School" the other is on the search results page on the left side. I need a script error fixed on this page [login to view URL] Help with setting shipping meathod.