sorry it my fault, creat a folder name it forum inside that folder, creat another folder name it icon and re-upload those image url, then check ur forum to see d work,

http://rapkidweb.xtgem.com/forum/icon/Mem.png

http://rapkidweb.xtgem.com/forum/icon/admins.png

http://rapkidweb.xtgem.com/forum/icon/lord_icon.png