Changing point for commas and commas for point

Hi list,<br /><br />Here in my country (Brazil) we have the decimal simbol as ' , ' (commas) and thousand separator as
'. ' (point)<br clear="all" /> <br />Here my sql uses:  to_char(sum(My_column), '99990D00') <br /><br />Is there any
wayto make this happens ?<br /><br />Regards<br /><br />-- <br />
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=<br/>                                  Atenciosamente
(Sincerely)<br/>                        Ezequias Rodrigues da Rocha <br />
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-<br/>A pior das democracias ainda é melhor do
quea melhor das ditaduras<br />The worst of democracies is still better than the better of dictatorships <br /><a
href="http://ezequiasrocha.blogspot.com/">http://ezequiasrocha.blogspot.com/</a>