   trying to connect to a server over a LAN!!!
  I'm using the ENet package for my project- I'm saying that because i don't know if my question is a generic networking concept or relates only to the package used -And at last i've managed to bind two computers together over a LAN connection.the problem is that i manualy enter the IP address of the PC that i run the server on it into my client app so they get connected.what i want to do is making my client app autamatically detect an existing server over the LAN ... like other games do!   
  Send a UDP Broadcast that requests all servers to respond with thier IP Address.  This will give the client a list of severs.  Now if you want to be a bit paranoid, do the request a few times, a UDP broadcast is not guaranteed to be recieved so you can add a little redundency.  theTroll   ;  Check the Forum FAQ!   