margje on "All in One SEO Pack Conflicts with Twenty Twelve"

Peter, All,

Same problem here, but I don't understand the solution.

running this code between when the wp_enqueue_scripts hook runs and when the wp_title hook runs:

remove_filter( 'wp_title', 'twentytwelve_wp_title', 10, 2 );

Where, exactly do i have to run this code: remove_filter( 'wp_title', 'twentytwelve_wp_title', 10, 2 );

I mean, in which file do i have to insert the above line?