I am trying to set up a sat nav system using a Acer net book loaded with Garmin Blue Chart sorftware and using a Garmin etrex as a reciever. At present the system seems to operate fine but have not taken it to sea yet !. The next stage is to find a remote rugged splashproof 12v monitor to use on deck to relay the screen information to where you need it, at the wheel .Has any one any ideas before I run aground somewhere off the east coast. Nick Turner