Intergrating external pages into usercp's USERCP_SHELL design?

[The-Ensemble]

I have a plugin that Is finally working (thanks to Paul M)

Here is the code for it:

PHP Code:

if (in_array($_REQUEST['do'], array('contributors')))
{



    // disable other displays
    $vbulletin->bf_ugp_genericoptions['showgroup'] = 0;
    $vbulletin->options['forumleaders'] = 0;
    
    

    $groupcache = array();
    while ($user = $db->fetch_array($users))
    {
        $user = array_merge($user , convert_bits_to_array($user['options'], $vbulletin->bf_misc_useroptions));

        if ($user['userid'])
        {
            $t = strtoupper($user['title']);
            $u = strtoupper($user['username']);
            $groupcache["$t"]["$u"] = $user;
        }
    }

    $usergroups = '';
    if (sizeof($groupcache) >= 1)
    {
        foreach ($groupcache AS $users)
        {
            ksort($users); // alphabetically sort users
            $usergroupbits = '';
            foreach ($users AS $user)
            {
                exec_switch_bg();
                $user = process_showgroups_userinfo($user);

                if ($user['receivepm'] AND $vbulletin->userinfo['receivepm'] AND $permissions['pmquota'] AND $vbulletin->options['enablepms'])
                {
                    $show['pmlink'] = true;
                }
                else
                {
                    $show['pmlink'] = false;
                }

                if ($user['showemail'] AND $vbulletin->options['displayemails'] AND (!$vbulletin->options['secureemail'] OR ($vbulletin->options['secureemail'] AND $vbulletin->options['enableemail'])))
                {
                    $show['emaillink'] = true;
                }
                else
                {
                    $show['emaillink'] = false;
                }

                eval('$usergroupbits .= "' . fetch_template('showgroups_usergroupbit') . '";');
            }

            eval('$usergroups .= "' . fetch_template('showgroups_usergroup') . '";');
        }
    }
    $customgroups = $usergroups;

} 


and I have this; which I know integrates pages into usercp's look with the links and navbar.

PHP Code:

$headinclude = str_replace('clientscript', $vbulletin->options['bburl'] . '/clientscript', $headinclude);

$navbits = array('usercp.php' . $vbulletin->session->vars['sessionurl_q'] => $vbphrase['user_control_panel']);
$navbits[''] = "New Page Title";


    $navbits = construct_navbits($navbits);
    eval('$navbar = "' . fetch_template('navbar') . '";');
    eval('$HTML = "' . fetch_template('blah') . '";');
    eval('print_output("' . fetch_template('USERCP_SHELL') . '");'); 


I think the main problem is changing

PHP Code:

eval('$HTML = "' . fetch_template('blah') . '";'); 


this to wrap around the rest of the code, I tried to mesh them together and its not worked, any Help?