Move plugin menu from 'settings' to 'tools'

I’m still using a now-unavailable plugin, accessible in the Dashboard appears under ‘settings’.

Having it under ‘tools’ seems preferable, and I’m wondering how to do this.

My limited knowledge suggests the relevant code to modify is…

function BackupContentAsText(){
add_action('admin_menu', array(&$this,'backupcontentastext_menu_setup'));
$this->zipfile = new zipfile(); // Create an object
}