How do I get gigabit speeds?

I have an onboard ethernet jack on a motherboard that supports gigabit speeds, through a cat5e cable, that goes to a WNDR4500 router, that goes through a cat5e to a WD Live TV. Yet, the best I can get is 100megabit speeds (10-13 megabytes). My computer is blazingly fast so that shouldn't be the bottleneck. What am I missing here? The motherboard is set for 1gigabit.

1872012-10-10T12:12:52Z

Is the NIC set to 1000 or 100?
look at the controller properties of the nic
see speed and duplex - check the settings

*Current applications running at 1 Gb/s are really pushing the limits of category 5e cabling

check out this page:
http://www.broadbandutopia.com/caandcaco.html

cat6 is preferred

Adrian2012-10-10T12:15:57Z

Well, your computer is gigabit, so is the router. However, is the WD Live TV actually gigabit as well?
If everything is gigabit, then I suspect one device may not be detecting proper gigabit speeds, and falling back to 100mbps.
Nowhere in the manual for the WD Live TV does it say there is gigabit speeds:
http://www.wdc.com/wdproducts/library/UM/ENG/4779-705062.pdf

and, according to:
http://community.wdc.com/t5/WD-TV-Live-Streaming-Discussions/Ethernet-Port-Speed-is-it-100mbit-or-can-it-do-1000mbit-gigabit/td-p/273966
it is only 100mbps, not gigabit