<blocks>
            <paymentmethodfix>
                <class>MagePsycho_Paymentmethodfix_Block</class>
            </paymentmethodfix>
            <payment>
                <rewrite>
                    <form_container>MagePsycho_Paymentmethodfix_Block_Form_Container</form_container>
                </rewrite>
            </payment>
        </blocks>