[Admin]

$[high]avatarurl[/high]=getavatarurl($[high]userinfo[/high][userid]);

if ($[high]avatarurl[/high]!='') {
      eval("\$userinfo[avatar] = \"".gettemplate("postbit_avatar")."\";");
    } else {
      $[high]userinfo[avatar][/high] = " ";
    }

    eval("\$userinfo[profile] = \"".gettemplate("postbit_profile")."\";");

$bbuserinfo is the info of the user viewing the page.

And [high]avatarurl[/high] because that's what postbit_avatar uses.