Sending the unwary to the blackviper site is a great disservice, IMO.
Blackviper's recommendations are a sledghammer that will leave the user
helpless when the computer fails to function as intended. The last time
I looked, BV had not updated recommendations for SP2 adequately and use
of any of the various levels will leave SP2 networking a shambles.
Frankly, the only site I would begin to recommend is the ElderGeek
, and only because he publishes user
feedback on the recommendations.