If you dont want to get admin mod, yet you still have rcon or just hosting the server and want to kick. Then type status, it will display there name, frags, wonid and such. It also displays their player id, aka the number they got when they joined the server, if they joined first, they would get 1, second would get 2, and so on. Once you have their player id number, just type kick #x (x being their number). It will then kick them from the server, no matter how screwed up of a name they have. Also you can do banid y #x kick ( y being the number of mins you want to ban them 0 being perm, x being their player id number, and then the kick at the end kicks them from the server )