ASP website coding

I have an e-commerce site built in ASP with a SQL database. My present coder isn't available so I need some correction to his work. I predict it will take 2 hours to do. What I need exactly is for a missing tax calculation fixed (it does work on another page). The other bug in this area is that it doesn't send the owner and user an email of the sale (but the other section does). I also need a small array added to calculate the different taxes for the provinces. In Canada there are 13 Province that have different tax percentages and they are all different. So when the user clicks on the Province he is in, the page knows what percentage to calculate his sale. Presently only one tax rate is calculated and that is for BC. That's it. Let me know if you are interested and I will share the URL.