asterisk users - Mar 2006 - Problems loading res_odbc.so and cdr_odbc.so

Hi.

I am having troubles loading the res_ and cdr_odbc modules, they fail 
because they cannot find libodbc.so.1
I have unixODBC properly installed and the needed DNS setup correctly.

Any ideas why I am having this troubles?

Where is asterisk looking for the libodbc.so.1 file?
And were can I configure this path?

Thanks in advance.