not sure if correct place avast just expired today and im wondering whats a good AV if its not free that wont be a problem and it would be good to have 3 computers protected from 1 license cheers!
Just re-register Avast Free.
+1
Why pay for avast when it has a free licence?
try bitdefender or panda cloud antivirus
for real world test reuslts.
http://www.av-test.org/en/antivirus/home-windows/