Joomla Expert needed -- -- 2

i have a website that i will share in private ...what i need is 1) When language is set to /US, I need the checkout form to switch to country United States i.e. pre-select US in checkout for shipping and payment method -This is virtuemart with one page checkout combined. 2) The prices are auto converted to US prices from euro using exchange rate system automatically but I want to turn the exchange rate auto conversion off and instead be able to set the $$ prices of each product manually so in backend I want 2 field for pricing; one is USD and one is Euro but should be able to enter it manually and not convert it via auto currency exchange I switched US language off as this is not working yet. We can turn it on in content languages I installed this plugin Netbase Virtuemart Currencies for Virtuemart so I can set currency per country. That is working great but the dollar prices are now the euro prices in the backend exchanged by the exchange rate. I need to be able to set US pricing manually per product I will share FTP and administrator with the qualified bidder !! Needs to be done ASAP .. ideally within one day as the other developer has already wasted 2 days