Go to the Tax tab and click the plus button.
Give it a name, and add a trigger... you can use: Total number of unique items in the cart > 0
Then for the calculation use: Based on column total and select the lvaToal column.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.