1 you install free
2 you get license key from avast ordering center
3 you install the free avast
4 you insert key in to the free because there is a glitch on avast lvl 3 that wont load properly
the glitch is that it will not load the scan computer, the realtime shilds , firewall , and andtispam things so you go from avast 1 and let it download it all vary slowly
after you restart IN vista you must all ways allow avast to run everythime you to load program becse it will be blocked by windows
avast! Internet Security