Topic: zend optimizer?

[Dustin Blad]

Has anyone been successful at installing the zend optimizer on 5.0? I downloaded the tar.gz file and followed the instructions and place the .so file in -  
 
/usr/local/Zend/lib/ZendOptimizer.so    -
I then placed-

zend_optimizer.optimization_level = 15
zend_extention = "/usr/local/Zend/lib/ZendOptimizer.so"

/etc/php.ini file.

Then I restarted apache.
I have version 5.0 with Dan Brown's how PHP 4.06.
Any ideas? Thanks!