Avatars in Members Directory

Hi,
I used this css code to change the size of the avatars in the members directory:

<code>
/* Change avatar size in Member Directory */

#buddypress #friend-list li div.item-avatar, #buddypress #member-list li div.item-avatar, #buddypress #members-list li div.item-avatar {
border-style: solid;
border-width: 5px;
width: 120px;
height: 120px
}

#buddypress #members-list li div.item-avatar img.avatar {width:100%;}
#buddypress #members-list li div.item-avatar {float:none !important;margin:0 auto;}
#buddypress #members-list li div.item div.generic-button.block-this-user {text-align:center;margin:10px 0;}
#members-dir-list ul#members-list .item-avatar .kleo-online-status {
width: 14px;
height: 14px;
bottom: 6px;
right: 20px;
}
</code>

Is there a way for me to regenerate the thumbnails of all the existing members? The strange thing is that some of the avatars are 50×50, BUT many of them are like 720 and 640 as well. Perhaps if they registered through Facebook, this happens?

In any case, if there is no way to regenerate those 50×50’s into 120×120, maybe it is possible to use the avatar sizes from the Profile Page, and use those in the Member Directory?

To use the: <div id=”item-header-avatar” class=”rounded”>? Or something?

Any help would be appreciated.