I think you are talking about the GPIB-ENE from NI.
1) You have to setup the ENET box by giving it an IP address. You may also need your Sys Admins help to do this. After that you will need to install the software, connect to the ethernet and connect to the equipment.
2) GPIB-ENET/100 from NI. Not sure if the NI488.2 comes with it or seperately, but you need it also.
3) Between $1,000 and $1,500 (US)
4) I like this solution. It allows you to control IEEE 488
equipment from virtually anywhere. You do not have to have a GPIB controller on every PC, but only on the equipment to control. I have test stations that I roll from place to place. I don't have to worry about connecting the station to a PC. I simply plug the station into the LAN and use any PC I want.
If you have e
quipment that you would like to control from anywhere or move from place to place this is the only way to go.
Kevin