kanewolf :
Does your TV have an ethernet port? If so, then a powerline network adapter may be the best bet.
Yeah, those won't get you great bandwidth but probably more than good enough for a TV. Just make sure you hook them up directly to the wall power socket, not through a power strip or surge protector.
IN my own case, getting a new router solved all kinds of issues I was having (wifi bulbs failed to connect, low signal/bandwidth on one end of the house, low bandwidth in my wife's office, etc.) but I run separate internet modem and router (the setup Isokolon described).
Looks like Kathy is running a combo modem/router. Kathy, if you own it and wanted to replace it, then you can replace it and configure any way you want. If it's provided and managed by your ISP, you'll have to coordinate with them. They would have to turn off NAT function in the modem/router in order to hook up an external router.