Trailing slash on URL PCI discolosure vulnerability
 

I'm trying to pass PCI compliance with securitymetrics.com. They have come up with the following vbulletin URL with a trailing slash that does disclose some server path information.

http://www.steelnavel.com/forum/index.php/

I asked vbulletin support and they suggested I ask here. I searched and couldn't find any solutions relating to trailing slashes. So does anyone know what I or my host can configure to have a 404 page returned instead of this disclosure?

Thanks! John