When i use paypal in oscommerce, i will be taken to https://www.paypal.com/cgi-bin/webscr. It is said like this:
Amount: $6.93 USD
Shipping & Handling: $5.50 USD
Total Amount: $12.43 USD
I am sure "Amount" here means "price and tax". How could i seperate the price and tax"? Make it like this:
Sub-Total: $6 USD
tax: $0.93 USD
Shipping & Handling: $5.50 USD
Total Amount: $12.43 USD

Is this possible? Many thanks in advance.