PLEASE --> Compiling an extension for PHP module (pgsql.so --> missing libpq.so.2)

Hi, I'm trying to compile an extension for Postgre support which I will either load in the php.ini or use the dl() function. Both methods fail right now. The dl() function gives me verbose though. I compiled the module like this: ./configure --with-apache=/usr/local/Apache/apache_13 --with-pgsql=shared make I entered the php_4.0.5/modules directory. I see two files pgsql.so and pgsql.la. I copy both to /usr/local/lib (where my libs sit as specified in php.ini). I restart the server and I get an error saying a shared library (libpq.so.2) cannot be found. I went to /usr/local/pgsql/lib and copy libpq.so.2 to /usr/local/lib. Now I get the following error: Warning: Unable to load dynamic library '/usr/local/lib/pgsql.so' - /usr/local/lib/pgsql.so: Undefined symbol "zend_ini_boolean_displayer_cb" in /public_html/inc/mainfile.php on line 3 Whats the deal with this? I am compiling right? Should php have produced a different libpq.so.2 file elsewhere? THANKS!!!