AbleCommerce Shopping Cart Software

I am trying to add a product to the basket from an external page. I see how to use javascript to add the item but I need a method to add an item using straight/simple html - ie http://domain.com/basket.aspx?addproductid=123. Is this possible or is there another method?

thank you in advance for your assistance.

Look at the AddtoCart user control. It accepts parameters and might be adaptable to serve your need.