I think I may have fried our home computer... Apparently the network card wasn't screwed in properly and I was jiggling with the network cord and I pushed the card out of its slot and it caused a brilliant luminescence to flare up and the computer died. Now the computer turns on but does not proceed past the motherboard diagnostic. I firmly believe the machine is, as the Germans say, kaput.
Further posts may be delayed until we find a new computer and I can't buy a new computer until I know the system requirements of Starcraft II... A real dilemma.