Could somebody help me? Thank you.

I am trying to link my shop to forum, I got some problems now.

In my ...shop/includes/modules/sideboxes/information.php

Line 28..

// Forum (phpBB) link:
if ( (isset($phpBB->phpBB['db_installed_config']) && $phpBB->phpBB['db_installed_config']) && (isset($phpBB->phpBB['files_installed']) && $phpBB->phpBB['files_installed']) && (PHPBB_LINKS_ENABLED=='true')) {
$information[] = '<a href="' . zen_href_link($phpBB->phpBB['phpbb_url'] . FILENAME_BB_INDEX, '', 'NONSSL', false, '', true) . '" target="_blank">' . BOX_BBINDEX . '</a>';


How could I change the URL from here? Please help me.I don't know how to change it.

(forum rul: http://www.domain.com.sg/forum)
(shop rul :http://www.domain.com.sg/shop)

Now, Show..The requested URL /shop//forum/index.php was not found on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

2 " // " ?

Appreciate you can help!