iexplore.exe, and rundll32.exe application errors

Archived from groups: microsoft.public.windowsxp.perform_maintain (More info?)

hello. i run xp pro on my home computer fo rthe last couple of years, and
now it was attacked by a virus when my daughter was in aol im, i get several
virus scans and cleaned them off, and still can not get into internet
explorer, these two messages keep coming up

iexplore.exe application error instruction @0x77f57b58 reference memory
@0x01050010 memory could not be read, and
rundll32.exe app error instruction @0x77f57b58 reference memory @0x00fd0010
memory could not read

i have comcast cable modem, and also a router so my other daughter can
wireless get onto internet on her laotop which works fine, just my main
computer is not letting me get onto the internet. thanks for all you help on
what i eed to do to fix this problem.