Hello, on 03/15/2009 01:56 AM Matt Neimeyer said the following: > $ComPort = fopen("COM1", "wb+"); I suspect all this does is opening a file named COM1 . Shouldn't that be "COM1:" instead of just COM1? -- Regards, Manuel Lemos Find and post PHP jobs http://www.phpclasses.org/jobs/ PHP Classes - Free ready to use OOP components written in PHP http://www.phpclasses.org/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php