I never got a ss or demo of this... One time my game became choppy for 1-2 sec. and I saw an unplugged phone jack at the top of my screen!
wireless internet or wireless router on land line? I'm on a wireless router & never have lag between me & the router.
[EoM]Focalor does a backflip into the lava.
You could try to buy a long ass cat5 "ethernet" wire and times when you want to play quake, just run it to the back of the router "safely if possible".