Can't - TL integration with Bugzilla

[Nirmalp]

Hi,
I have installed TL - EasyPHP-5.3.5.0 and Bugzills 3.6.3 pack, as per the TL doc custom_config.inc.php, bugzilla.cfg.php are modified but can't get integration.
FACING THE FOLLOWING DIFFICULTIES:

1. Post integration and when changing the status of a testcase, i am unable to bring up the Bug icon under BUG Management.
2. How to verify the integration has happened.. is there anyway other than the showing up icon?
3. Is there a way to view the schema and table details of test link and bugzilla as there is no editor for it.
4. please provide any troubleshooting steps if they are in place..

Made the changes to the lines between the pluses in the below mentioned snippet ......

custom_config.inc.php File
--------------------------
// use contents of this file as an example of custom configuration
// *******************************************************************************
++++++++++++++++++++++++++++++++++++++++++++++++
$g_interface_bugs='BUGZILLA';
$g_bugInterfaceOn = false;
$g_bugInterface = null;
++++++++++++++++++++++++++++++++++++++++++++++++
// Uncomment this if you want dBug() display info
// define('DBUG_ON',1);
//
// To use a different version of ADODB that provided with TL, use a similar bunch of lines
// on custom_config.inc.php
// if( !defined('TL_ADODB_RELATIVE_PATH') )

bugzilla.cfg.php
--------------------
//Set the bug tracking system Interface
/** DB host to use when connecting to the Bugzilla db */
define('BUG_TRACK_DB_HOST', 'localhost');

/** name of the database that contains the Bugzilla tables */
define('BUG_TRACK_DB_NAME', 'bugs');

/** charset of the database that contains the Bugzilla tables */
define('BUG_TRACK_DB_CHARSET', 'UTF8');

/** useful if you have several schemas see BUGID 1444*/
// define('BUG_TRACK_DB_SCHEMA', '[CONFIGURE_BUG_TRACK_DB_SCHEMA]');

/** DB type used for the bugtracking db */
define('BUG_TRACK_DB_TYPE','mysql');

/** DB user and password to use for connecting to the Bugzilla db */
define('BUG_TRACK_DB_USER', 'bugs');
define('BUG_TRACK_DB_PASS', 'bugs');

/** link of the web server */
define('BUG_TRACK_HREF', "http://localhost/bugzilla/show_bug.cgi?id=");

/** link to the bugtracking system, for entering new bugs */
define('BUG_TRACK_ENTER_BUG_HREF',"http://localhost/bugzilla/");
?>