[GENERAL] ip connection on local p2p network

[typing80wpm]

I just installed the windows postgresql on one of the five machines in our office, which happens to be 192.0.0.9 according to ipconfig.   I have installed pg explorer on another machine which happens to be 192.0.0.101  ....   What changes do I have to make in the various .conf files for the postgresql server, (and in pg explorer) so that I can connect to the server from the other workstation, hence proving to myself that I could use postgres on our small office network.  Thanks for your help!