http://www.easysoft.com/products/data_access/odbc_firebird_driver/index.html
Need a robust connection to Firebird using ODBC? This powerful and lightweight Firebird ODBC driver provides superior performance. It supports Firebird 1.0–1.5.x and 2.1 databases from Linux, Windows, Mac OS X and Solaris platforms.
Easysoft (http://www.easysoft.com/)