I thought I had made all the correct settings for sales tax but still my general products are displayed as if there is no tax rate. I have set my tax rate to 10% but it does not get applied during check out. How can I fix this?

Also in one of he tax settings there is a zone tab. On my Zen cart zone tab is set to Florida and it will not accept any other entry. My zone of NSW. How can I enter my zone in?