@Motormouth
I don't know if PC-side soft works on Win3.1, I only used it to get cheap ethernet on big box miggies :-) etherbridge.device is designed for cbm bridgeboards so I'm not 100% sure it will work with your 486 card but if it's seen from the Amiga side and it's made by cbm and uses Janus software it may be a good idea to try it out.