Add multiple currency select option to search box -- 4

I have a property search box and will like to add an option to it where people can select a preferred currency. I will like it to be a select box which will attach a currency to a price list which is already listed in another select box and will append that to search results based on criteria selected. Will also like to format the search results with pagination control of some sort. Making spaces for banner ads. I will need this to be done without affecting the search queries already in existence. Thank you