I had the network up and running when the PC's were directly connected to the hub. I'm sure the error is with the infrastructure wiring.
I'm using the 568A wiring standard for the straight thru. I'm uncertain on what wiring std I should be following when I connect the wiring to the wall jack? Should this be 568A or the cross-over you 'linked' to in your response. I use patch cords to connect the PC to the wall jack.