vBulletin Domain Configuration Assistance

Hello, I recently purchased a vBulletin forum license and I am trying to set it up with my domain purchased through GoDaddy. My main domain is: pgaming.net I created a subdomain: forums.pgaming.net I updated the DNS settings in GoDaddy and added the required CNAME record... (Budget: $10 - $30 USD, Jobs: Apache, DNS, GoDaddy, Linux, PHP, vBulletin, Web Hosting, Website Management)