How to hook a plugin in template?

[Bouncer222]

Ok so I created a plugin with the code

ob_start();
   include('activitybar/activitybar.php');
echo 'test';
   $activitybar = ob_get_contents();
ob_end_clean();

hook location: member_complete
product: vbulletin
Title: Activity Bar

Now this works with a php file also on my site together to generate an image bar.

Now what code do I put in MEMBERINFO template (doesnt matter where at the moment)
so that this image bar can be displayed?

If I'm saying this right..(im a noobie) what im trying to do is hook the plugin to a specific location in a template. If thats right to say.

Can anyone help me please?
Thanks.