f4lco I think you're trying to ask how to configure the plugin to set the location of the weather in Brazil ?
If that's what you're asking then you might want to take a look at this page:
http://www.bbc.co.uk/cgi-perl/weathe...h_query=brazil and choose you're city. In the adress bar of your browser you will select the four digits located at the right end of the adress.
For Brazil/Brasilia it will be 7029
Now you either open the sma and find this line:
g_cvar_region = register_cvar("weather_region","XXXX");
and replace XXXX with 7029 or whatever code you will use (save and close),
either open amxx.cfg and add a line with the cvar:
weather_region "7029"
(save and close)