PHP & PostgreSQL

Hello, i need some help here.
I'm using Xampp for Windows.
I want to use PostgreSQL as the database, I've installed PostgreSQL 8.0.

I've updated php.ini (located at /xampp/apache/bin/php.ini) & unmark : extension=php_pgsql.dll

I've restarted the apache.
But when i try to login at PhpPgAdmin, i still got an error message :
"Your PHP installation does not support PostgreSQL. You need to recompile PHP using the --with-pgsql configure option."

When i checked using phpinfo(), the postgresql module still not loaded.
Can someone help me solve this problem? So i can use the PostgreSQL work along with Xampp?