172416 Change Cart

We are running oscommerce at the moment and need a few things updating. When a customer clicks on buy now we need them to be transfered to our new cart and not the oacommerce cart using the below code. Our site will need updating with the below code so it transfers the right product and price over. The Code for this button is: <form action=[login to view URL] method=post> <input type=hidden name=itemname value='Another Fantastic Product'> <input type=hidden name=price value=9.99> <input type=hidden name=storeid value=10000> <input type=hidden name=quantity value=1> <input type=submit value='Add to Basket'> </form> Look forward to working with you.