Oscommerce help, Add Different Prices for different Countries

Need someone to install a contribution to my oscommerce cart that will allow one product on my shop to be sold to 2 different countries with 2 different currencies (pound and dollar). Prices of this particular product must be different for both, US buyers pay 49.99 usd + 7.99 shipping. UK buyers pay 55pounds and no shipping because the store is in the UK Not only will u install whatever contribution that will make this work, but yo have to add the product to my shop. Its just one product. My problem is similar to this [login to view URL]