Thanks Nic, the good news is that is possible, I really want to do it , the thing is that Im a little new on this , now I will figure out if you give me a hand.
First you mention that I need to hide a custom fields, that means if I have 10 custom fields I need to hide them?
then I will change the cart button link so it go to the smart form Right? this Im not to clear (specifying the id of the product) ? can you give me a example, then the last button of that form will have the product add to cart link right? that have the product id, so it will go direct to the shopping cart?
So user will get to me product and choose characteristics then they click add to cart( I can change it to choose design ) and they go the smart form, they fill that form and click add to cart in the form, at that time they are in the shopping cart ready to pay right?
Thanks Nic ,