I have the following problem with php 4: when I uncomment php_interbase.dll line in php.ini, I get the following message: Unable to load dynamic library 'c:php\extensions\php_interbase.dll' - A device attached to the system is not functioning. I get the same result when I try to use dl() function. I don't get this message if I try to use any other dll, only php_interbase.dll. Can anyone help me with that? Thank you, Alexey Freidman.