You have said that you do not have it working correctly yet, please explain what is not working out correctly for you and the result that you are getting. I was able to view the link you posted to and add the item to the cart, then go to the checkout from the cart display page. Are there problems with the adding to the cart, or the checkout itself?
Along with this info please also describe a little more about what you are hoping to accomplish with the options and what you have tried so far.