Mensaje[] m;
ThreadStart[] ts;
Thread[] t;
m = new EnvMsj[numDisp];
ts = new ThreadStart[numDisp];
t = new Thread[numDisp];
for (int i = 0;i<numDisp;i++)
{
m[i].mac = direccion[i];
ts[i] = new ThreadStart(m[i].EnvioSimple);
t[i] = new Thread(ts[i]);
t[i].Start();
}