113144 oscommerce modifications

Hello, I create an oscommerce website and i have major problems. In few words: - categories and subcategories are not show clearly in my left side bar... - I use 2 langages and i have problem with button... - I would like to use thumbnails on the homepage but i have only the larger picture for the moment... I create a document with the details of the problem. You can download it here: [login to view URL] I bought this template on template monster. I need an expert in oscommerce rapidely. Thanks.