I have a work laptop with Win XP pro SP1 and I just downloaded and installed Look 'n Stop. Seems pretty nice. However, I have to network this laptop with another computer that has an embedded Windows XP software in it. I have to pull data from the imbedded doohickky into the laptop. Look 'n stop does not allow me to. It does not tell me that it is stopping the transaction but it must be because as soon as I "quit" the firewall I can network the two together. My IT dept. which does not support the firewall said that I need to find out how to open port 5678. Can you tell me how?