I'm setting up a script and from what I have read I need to configure PDO I ran this command: pecl install pdo I looks like it downloaded and installed, It told me I needed to add the extension=pdo.so to the php.ini I did this and restarted httpd and re-ran my script. Here's what I get. PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20060613/php_pdo.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20060613/php_pdo.so: cannot open shared object file: No such file or directory in Unknown on line 0 It also said I need to run: ./configure --with-zlib --enable-pdo=shared can I just run that? or do I have to run all the configurations I ran before? Will it simply add it? If I have to run all the configurations as before including this, how so I find the ones I ran before?