Zarzal this hack is the one for 4.01 correct. To show the gallery in the who's online add the following to the online.php file in your language directories near the end before the ?>
$ubbt_lang['showgallery'] = "Viewing a Gallery";
$ubbt_lang['addfav'] = "Adding a favorite Picture";
$ubbt_lang['adm-index'] = "Administrating the Galleries";
$ubbt_lang['bulkupload'] = "Uploading a bunch of photos to the Gallery";
$ubbt_lang['showphoto'] = "Viewing a photo in the Gallery";
$ubbt_lang['comments'] = "Commenting on a photo in the Gallery";
$ubbt_lang['slideshow'] = "Veiwing a slide show in the Gallery";
$ubbt_lang['uploadphoto'] = "Uploading a photo to the Gallery";
