My mom has a Linksys router on one side of the house and her PC is on the other. The signal is somewhat weak and she has said it has been cutting out lately. What can I do to help fix this? I've noticed when I'm over even when sitting in the same room as her PC my iPhone and MacBook are having connection issues. The cable modem is in the room with the router, but I COULD run a cat5 cable from one side of the house to the other. Would that be better than buying a repeater? With the cat5 cable, we would lose wifi on the other side of the house. I do have an older Linksys wifi router. Could I add this to anything to help solve this problem?