Brazil and Argentina are ready to stop using U.S. dollars to trade goods between them.

Brazil's president tells the Buenos Aires-based Clarin newspaperthat exports and imports between the two nations will be bought andsold in local currency — reals and pesos.

President Luiz Inacio Lula da Silva did not say when the measure would take effect.

http://www.iht.com/articles/ap/2008/09/07/business/LA-Brazil-Argentina.php

It was first proposed two years ago.

This involves more than these two nations. A bit of background info from 2007:

http://www.iht.com/articles/2007/10/22/business/bank.php