OpenCart - Fix Tax problems - Please read and understand the description before bidding

We need to achieve the following: Items we sell in the UK need to have vat applied. The price shown next to the product should be vat inclusive, not net. The vat must show in the checkout and invoice but was included in the ‘retail’ price shown next to the product anyway. Items we sell in the EU need to have vat applied. The price shown next to the product should be vat inclusive, not net. The vat must show in the checkout and invoice but was included in the ‘retail’ price shown next to the product anyway. BUT, we need to be able to apply different pricing for this market, viewing controlled by the ‘E’ sign on the homepage Items we sell in the USA need to have NO vat applied. The price shown next to the product should be have zero sales tax. No UK vat must show in the checkout and invoice. BUT we need to be able to apply different pricing for this market, viewing controlled by the ‘$’ sign on the homepage.