Have you ever had that before? HELP !!!

I build 2 ZSs one as my own main ZC store and the other one as a backup and testing website, everything went fine for the last month until I got some problems with my testing ZC while I was making a few adjustments to the configure.php, The strange thing is that the admin side worked fine with my test ZC just fine I could do everything I want, but when I go to the user side I get a blank white page !! :wacko:

http://www.arab-broker.com/oriental2/

So what I did looked around here in this forum to see if there are any similar issues, I didn’t succeed to find any thread discussing this matter, So I wrote a thread asking for help, while I am waiting for any advices to solve that problem, I decided to make the adjustments to fix the link of my forum on my main website as I have another clear back up in case of it crashs! what I did in there is just I changed the code in \includes\modules\sideboxes\information.php

So I replaced the code :

// 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>';
// or: $phpBB->phpBB['phpbb_url'] . FILENAME_BB_INDEX
// or: str_replace(str_replace(DIR_WS_CATALOG, '', DIR_FS_CATALOG), '', DIR_WS_PHPBB)
}

with this code :

// Forum (phpBB) link:
$information[] = '<a href="' . "http://mysite.com/forum/index.php" . '" target="_blank">' . BOX_BBINDEX . '</a>';

After uploading the information.php my website I crashed as it’s shows a blank white page exactly like what I have now with my test ZC and even the admin side works normal!! Then I said OK, NO PANIC.. NO PANIC.. you still can use your backup files to restore your website and I did that but nothing changed, I still can’t view my ZC ! please I need your help to get my ZC back to live as I’m now in deep frustration and PANIC :shocking:, I don’t know what to do !!

That’s the link to my store :

http://www.arab-broker.com/orientalmeal/

and that the thread where I got that advice :

http://www.zen-cart.com/forum/showthread.php?t=53241