But there are a difference between my site and http://die-freaks.com/ x)

Your Portal Version: 1.0.0RC3
Your phpBB Type: Standard phpBB3
MODs installed: No
Your knowledge: Beginner

What have you done before the problem was there?
Install phpbb and wow cataclismo style

What have you already tryed to solve the problem?
Read the install xml on the folder ...