The real guide is this:
Today, those keys are fool's gold. Keep them as a screenshot for nostalgia, but do not install the software they unlock. keys for kaspersky internet security 2013
Using KIS 2013 today is like leaving your front door unlocked in a city that has grown ten times more dangerous since you last checked. Modern malware specifically targets old, unpatched software. The real guide is this: Today, those keys are fool's gold