i got error on my website...

500 Error

An internal server error has occurred. Please try your request again momentarily.
  • File or directory permissions are set too high: Files should be 0644, directories 0755.
  • Problem with your .htaccess file.
  • A syntax error in a CGI script.
here is my domain: itekniks.x10.mx
just newly created and now it is active for hosting but the problem is i cannot browse the page.