I sell turnkey websites but they all come with the price in dollars.
Does anyone know a free way 2 change it (perhaps there's a script or 2 lying around on the net?) to another currency (pounds) or to give people the option?
You'd need a direct feed from an appropriate bank. Exchange rates change from one minute to the next.
There are a number of sites around that display exchange rates, it might be easier to just provide a link to one of those.
www.xe.net offer an up-to-date currency conversion service.
you might want to see if there are any sites out there will let you have an external .js file that contains all these currency's for you. alternativly if you have PHP I can write you a simple file to read the values directly from that site...