I upgraded PC Tune Up to the Pro version when I got my Zone Alarm Extreme. I can't get the pro version of PC Tune Up to install on the other PC in my house. I know this is probably a no brainer but how do I upgrade? I can't remember how I did it on the main machine, I can't find a license key or anything.
Operating System:Windows XP Pro
Product Name:ZoneAlarm Extreme Security