Ok, so I have Avast! now, but it's free so I think it's currently limited to the features. Is there some way to get the full version/protection for free?
No there you are wrong, it's a brilliant idea to use a free AV as you can add other security programs with them.
Like I would as your using Marvel Avast, I would add well Comodo Firewall as the Windows Firewall in Windows 7 isn't one I would use without support from a program and you could add Malwarebytes antimalware.
As for CCleaner, how can that protect him against malware?
No there you are wrong, it's a brilliant idea to use a free AV as you can add other security programs with them.
Like I would as your using Marvel Avast, I would add well Comodo Firewall as the Windows Firewall in Windows 7 isn't one I would use without support from a program and you could add Malwarebytes antimalware.
As for CCleaner, how can that protect him against malware?