@panyan you are talking rubbish. cat5 is the cable, you are talking about the connectors. We use RJ45 connectors for LAN, RJ11 is for phones you can use cat5 cable and stick the connector you need on the end for the purpose you desire. I have a box with loads left over when i did my telephone extension in my house, I keep it for knocking up network cable when needed.
@ Buchanan you do talk sense. It was me that said about the laptops. Yes laptops come with wifi but not necessarily n spec. I suggested usb as it is versatile, handy for troubleshooting network problems on pc's and laptops and if it upgrades a laptop so he has better range/signal in the garden it's a bonus.
That was my opinion, I bought a pci digital tv card yonks ago, no matter how many times i tell myself it's better than usb, i still regret not being able to swap it between the rig and my laptop so I can have a tv in the kitchen temporarily.
Jacks solution is the best if we are all honest. It would make sense to buy a box of cat5 and some RJ45 connectors and a crimper. I have a feeling it will workout cheaper than powerline networking although that is definately an option......it all boils down to the spondoolies at the end of the day