My wireless died on my netgear this week and I have just replaced it with a Zoom X6 £30 from Tesco, it's quicker, a lot quicker with wireless, than the netgear and with a 2 year warranty, I'm most impressed. Also it was incredibly easy to set up and comes with very good reviews when I did an on-line search,
If you're going for the DG834G make sure it's a version 4. This click here is why. Other than that, the GT performs very well although you will only get the benefit from the 108Mbps if you intend to share files over your network.
A cat5e cable has RJ45 connectors on the end. Cat5e cables are also called patch cables. You should get one supplied with the router.