RAFscott - 1/20/2017 12:03 Are you saying one computer is receiving the internet signal through the WIFI USB adapter, and that you are then trying to send it out the ethernet port of that computer to another computer, some distance away? If so, you have to enable Internet Connection Sharing. There are numerous write-ups on the net about it. The following link was a quick find that is pretty detailed.
http://www.countrymilewifi.com/how-to-share-computers-wifi-with-eth... This is the ticket. Your old computer and the barn office computer were configured properly with internet connection sharing. Now you've replaced one of those two computers and the new to you computer is not configured the same as the old one was. Research internet connection sharing and you'll be able to set them back up to where they're working again.