Where are you trying to contact us? This forum is the best place, but other contacts should be directing you here.
1. Those plugins should be included in your installation of OJS -- they come included. In any case, it sounds like these plugins are not registered with the system. To do so run "php tools/upgrade.php upgrade" on your server -- but please back up our database first in case it's in an intermediate state e.g. from an earlier failed upgrade.
2. It sounds like you want to edit your templates. The template for the Table of Contents is templates/issue/issue.tpl -- it's a Smarty template, which you can add HTML code to. See http://smarty.net
for information about Smarty temlates.
Public Knowledge Project Team