42150 dollars $ to GBP £

hi i need a website editing. it currently accepts payments in dollars $ i need it to be converted to accept payments into £ the website is a real estate website same as this one although this one. i only need it in pounds not dollars [login to view URL] here is a link to the website although i have the full script here i am not wanting to pay a great deal on it as it is early stages of business and i havent got much cash flow