Home network consists of
xp home edition desktop
xp home edition laptop
tivo service, etc.
netgear wgt624
comcast w/surfboard modem
My feeling it is that wife's operating system is XP professional-which I am unfamiliar with, and it is somehow blocking access to home network as it is a work laptop
i.e. she was laid off and they let her keep it, so work network is no longer needed