execute a script on access to a directory

Hi, I would like to know how i can force a PHP script to be executed everytime a certain directory is accessed, for example in http://domain.com/go/getit the presence of the /go/ directory would force a PHP script to be executed prior to any operation. Do i need to play with rewriting urls in Apache or is there any other cleaner method (that would not require rewriting URLs) to achieve this? i'd hate to have to rewrite URLs... thanks. Enrique- _________________________________________________________________ Descargue GRATUITAMENTE MSN Explorer en http://explorer.msn.es/intl.asp