Warning: include_once(./_common.php) [function.include-once]: failed to open stream: No such file or directory in C:\APM_Setup\htdocs\bbs\link.php on line 2

Warning: include_once() [function.include]: Failed opening './_common.php' for inclusion (include_path='.') in C:\APM_Setup\htdocs\bbs\link.php on line 2

Fatal error: Call to undefined function conv_subject() in C:\APM_Setup\htdocs\bbs\link.php on line 4