Change currency with language

[Ihateit]

Hey Forum,

i would like to change the currency whenever the language is changed using the flags on my site. So if eg. britain is chosen it changes to british £. What php files do i edit/change, or what plugin/extension do i install?

Virtuemart 2.0.10
Joomla 2.5.6

Yours sincerely
Ihateit