alright, just read this..

alright, all of you prolly don't know this, but last night, I was addding some stuff.. my pc crashed, and now I can't get in the game, I even ran the server from the file zack sent me, but I go in the game.. wait like 5 seconds and I can't move, and I disconnect >.>
if any of you know how to fix this please help.. I know it's not the server, because other people don't do this.. me, my computer, and my other computer are the only ones that do this, and the reason the other pc does, is because we are on the same router.. any ideas on how tofix this??