329589 extra options in shoppingcart

We sell wallpaper and laminate flooring in our web shop we need extra options for that: first option is to add products with a check box in shopping cart, imagine you sell wallpaper would be easy if that was already in shopping cart and you only add text, want to order this as well. So these is matching products, wallpaper needs glue laminate needs the wooden plinth i think there is a module for that second is this, i added one product, walpaper in my cart: now is 1 product in the shoppingcart , but client wants to order wallpaper, is xx meters in a role, how many he needs? so we need a link tekst, with how many wallpaper do i need? if clicked, div goes down under the shoppingcart or popup, and you can give in the size of the room i meters , script calculates than exacty how many you need so i need two, one for wallpaper, and one for laminate best way to use is on the input or next to input for adding number of products, as a popup or whatever