you could go into the apache configuration (you're on CentOS4 if your'e where I sugguested to go, so thats /etc/httpd/conf/httpd.conf) and scroll down to the bottom where your site is entered and add this in the options line:
AcceptPathInfo On
i'd try to say more, bu ti'm kinda timpsy and I need to find some foood so i'll be balc kater.