My house is Cat 5'd.
My office distributes computing to the rest of the network. I did not pull wire, but ran 3 lines out, wall jacked those, went around the house at the roofline stapling with a gun and dropping down to 3 rooms, where I drilled in, and installed easy boxes. You do the easy boxes with a dremel tool, and they sit into the dryway, then you turn screws which hold them in with a couple lugs. Then in with the wire, put jacks and wall plates on and it looks just like it goes there