What's the benefit of using a plugin? I did it manually using your CSS tutorial.
Nice but IMO, the Whois page should open in a new window/tab...
I can't comment as i didn't use the plugin, but on the template edit version instead of:
<br /><span class="smalltext">{$lang->ip} {$user['ip']} <a href="modcp.php?action=ipsearch&ipaddress={$user['ip']}&search_users=1">{$lang->lookup}</a> - <a href="http://whois.domaintools.com/{$user['ip']}">[Whois]</a></span>
Make it:
<br /><span class="smalltext">{$lang->ip} {$user['ip']} <a href="modcp.php?action=ipsearch&ipaddress={$user['ip']}&search_users=1">{$lang->lookup}</a> - <a href="http://whois.domaintools.com/{$user['ip']}" target="blank">[Whois]</a></span>
Adding target="blank"
can you say ... how to hide online list page to guest and registered users