mmm ive done all these which you have said, need any help fionn just say please and ill get back to you.
But atm ive just got both of my 2 pc on home network linked to a router, one had a direct ethernet link to motherboard on it but other pc motherboard isnt so new so had to use a usb adptor, which ive just recently changed to a new networking card.
Got any problems just say also please state in detail what you want to get and do and ill answer you.