Total Order Computation

[Guest]

Hi, all--

 

Would someone please point me to the exact script (Line numbers would be great, also) where the total order computation occurs. I believe that it is in one location but used in numerous screens like the "Order Confirmation", etc.

 

I need to be able to modify the total order amount at that point so that the modified amount will be shown on all screens.

 

Thanks for any help provided!

 

Don