Problem with simple urls in php

[getthat]

Hi,

I'm new to all this and I'm having some problems with a script I bought. The script is a vbulletin hack.

I got everything working except for the simple url's in php. For example, I want to display www.getthatsong.org/lyrics/29510/Saliva/Always but it doesn't show a page. Instead it gives me a 404 error. I guess I've got to change something in my .htaccess file, but I don't know what. I already tried to add "ForceType application/x-httpd-php" but it has no result.

I would appreciate some help here.