Default file extensions in apache

I want to be able (preferrably with .htaccess) to get apache to recognize files without entering their extension in the URL..  for example: if I wanted to call http://www.website.com/script.php, that i would also be able to use the URL http://www.website.com/script  (without any extension).  I want my files to keep their .php extension on the server- i just want apache to recognize them without any extension.

thanks-