Gambio XT:commerce currency customization

Hi, we are looking for someone who is able to write a modul/customization for our Gambio shop (XT:Commerce) We would like to have individual prices for each product in different currencies. We do not want to use the global currency calculation. for each product, we need a individual value in the database for each currency. For example: Product A should have a price in currency one and a price in currency two: product A: CHF 10.- and EUR 13.- Product B: CHF 20.- and EUR 30.- For product A, there is another currency calculation as for product B. As soon as the user enters the shop, the price should be shown in his currency, detected by customers IP address. if customer is registered and logged in, the currency will be shown as country definition. we need the following currencies: CHF (swiss Franc), EUR (Euro) and US (US Dollar). The currency needs to change the PayPal modul and other paying moduls as well. so transmit that to the pay modul installed. (pay in advance by bank wire, invoice, paypal, creditcard...) Hope the description is clear. if you need further information, just send my your question. thanks in advance, and kind regards.