I have a TV(older tube type) in the same room as a desktop PC running wireless G. The connection to the internet works fine when the TV is off but slows to a crawl or completely dies when the TV is on. The connection to the Netgear Rangemax router (2 floors down) remains, but ineternet access slows or drops. A notebook computer in the same room does not have the same problem.
So far I have tried
1.changing the channel on the WiFi from 6 to 11.
2.plugging the TV in a different outlet.
I have not tried
1. moving the TV or the desktop to a different location (not practical) or
2. moving the laptop in close proximity to the TV to see if I get the same problem