CS-Cart Add-On

I am selling blinds and windows coverings, and upgrading my website to an online store. I made a decision to use CS-CART. Needed is an ADD-ON with two features: 1. Some of the products will have a drop down list with choices for Height and Length, when user selects it, it will locate pricing for Height and Length in the database that is designed like this blinds_id int product_id int width int height int price decimal On top of this there will be additional pricing for different options (Like Color or Frame Type). 2. Search box where user can input height, length and other options and based on this compare prices of what is available based on his selection. I will not provide you with an access to a server, but you can download a demo from [login to view URL] and developed addon based on this demo.