foooter, custom link there

hey guys,

I’d like to put a custom link in the footer, but I know nothing about changing things in the editor.

How do I do it if this is my current settings in the footer?
“<div id=”site-generator”>
<?php do_action( ‘twentyeleven_credits’ ); ?>
” title=”<?php esc_attr_e( ‘Semantic Personal Publishing Platform’, ‘twentyeleven’ ); ?>” rel=”generator”><?php printf( __( ‘Proudly powered by %s’, ‘twentyeleven’ ), ‘WordPress’ ); ?>
</div>
</footer><!– #colophon –>
</div><!– #page –>”