As for Windows XP, SP2 is in the process of being released. This update
will ensure that automatic updates and the built-in firewall is on. This
move is done to help home users protect and keep the machine updated.
However it doesn't mean that you should go w/out antivirus. Make sure you
run a antivirus product and keep it up to date.
/neo
ps - sp2 also secures internet explorer a lot better than its predecessors.
pss - sp1a should already be installed. double click on my computer and
select help | about windows. second line should mention service pack level
if one is installed.