When I try to add a file for an Zend Extension, it throws some error.

Invalid command 'zend_extension', perhaps mis-spelled or defined by a module not included in the server configuration
I'm trying to load Ioncube, which I know the path I use is right.

Another related problem. Instead of making a new topic is. I get this problem on occasion restarting HTTPD. I get this when I comment/remove the zend_extension line.

[error] VirtualHost 70.38.37.203:0 -- mixing * ports and non-* ports with a NameVirtualHost address is not supported, proceeding with undefined results
httpd not running, trying to start
I get this error when I type /etc/init.d/httpd restart, but when I do it via WHM it gives me no error.