well that laanx server is it  but  when i ping it ,says server cant connect and when on the login it  says Failed

do i need to rename it to  the 1 on the Main Server Page
cos it says name is laanx.fragnetic.com or sumthing,do i need to change the name in server.xml (and ip?)

cos loads of people joining it now but i cant seem to work out wot else to try to get it to work other then the above