Wow what a mess you've got there, pal . Why are you naming your Thread array with the same name of you InNetwork class ??
public Thread InNetwork = new Thread;
To answer your question I'll change the name of this array to 'threads'.
To access the variables you have to keep a reference from the instance you passed to the Thread:
public class Server
public Thread threads = new Thread;
public static void main(String Args)
InNetwork in = new InNetwork();
threads = new Thread(in);
in.iClientH = 12345;
Other than that, I suggest you looking into java basics first, before writing Client/Server applications .