[Trek]

What you'd need to do is edit whatever file creates that module, wherever you want the forum legend to display, you need to add in the:

// Added by UGL module

        ($hook = vBulletinHook::fetch_hook('vba_cmps_module_onlineusers_complete')) ? eval($hook) : false;

Then make sure you enable it in the vBulletin options and you should hopefully get it to display there. It's hard to say not knowing that addon you're using, but that's really all it should take it to make it work. It depends on if the same data is available in that module as is needed.