Add following functionality to existing website

Hi 1) Change the Category Icon’s 2) Need to change product Icon 3) Curasol Change 4) Add Telephone number and contact details on top 5) When you select the product for purchase the details page need 6) Can you put background line for a)Catrgories b)Other products you might be interested in.... 7) Stretch the screen and reduce the paces between left and right