Chuck, I got it work now by login photophost and edit admin-index.php just to khmerclub.com for forum. The only problem I noticed when I sign out from my page I get this error:
You can use to the test account and see why I get that message.
Fatal error: Please check the $bitfields array in the vB_DataManager_Moderator class definition - $vbulletin->bf_misc_moderatorpermissions2 is not a valid bitfield.
in [path]/includes/class_dm.php on line 220