Strange characters in query results odbc

[eluser]Nacho[/eluser]
Hi, I have a problem and not know how I can fix it.
When I perform a query to an MS Access database using the odbc driver and there are international characters, the result shows a strange symbol ... a black square with a question mark.
For example, if a result is Federatión, which is displayed is Federati?n(ó => black box with question mark).

In the configuration file database.php tried changing

Code:

$ db ['default'] ['char_set'] = 'utf8';
$ db ['default'] ['dbcollat​​'] = 'utf8_general_ci';

For

Code:

$ db ['simon'] ['char_set'] = 'latin1';
$ db ['simon'] ['dbcollat​​'] = 'latin1_swedish_ci';

But does not solve the problem.

I also tried using the function array_walk, but could not make it work ...

Anyone can help me?

Thank you very much and sorry for my English!