We just setup our Agilent 1100 HPLC system (bought from eBay) and connect the PC with ethernet cable. That PC has the ChemStation software pre-installed. However, when we start the ChemStation the first time time, showed the attached error messages. The IPCONFIG of the PC was also attached. The IP address of the PC was pre-set as 192.168.254.10 and don't know if it is correct of not. Wish we can seek some good suggestions from you