place order with default currency

Hi

I need this plugin to do the most simple of things.

That is allow customers too see the order on checkout page in any currency but when the place order button is pressed all information is sent as the default store currency.

Also the Thank you page is displayed in the default currency I’m assuming the above would fix that, and also fix the admin orders section where you have red text under a currency’s order value which is awful.

This should be a standard option. I can see many people have asked but I have not got the method to work