Completion of full scan on this machine usually produces list of "unthreatening" items - I read quickly, ignore and monthly empty quarantine after a glance.
Windows XP Home, V.2002, SvPk 3 updated. Spybot,SuperAntiSpyware, Vipre 2013 Anti-virus all run regularly.
TROJAN.FakeAV.NMI appeared 2 days ago - I don't think it should even have gotten into quarantine as I have settings I thought
blocked and deleted such things. Obviously I don't.

It is quarantined. Should I delete it? If it appears again what should I do. Any advice I'm not smart enuf to ask for?