asterisk users - May 2009 - question of flite installation

Hi,
  After following the messages to install flite, I can find the following files.
/usr/lib/asterisk/modules/app_flite.so
/etc/asterisk/flite.conf

That's mean flite is installed successfully.  Then I restart asterisk
but nothing found for that module.

sip*CLI> core show application flite
Your application(s) is (are) not registered

The module doesn't load by asterisk even after restart.  How can
Asterisk reload all the modules in /usr/lib/asterisk/module?

ango