Follow along with the video below to see how to install our site as a web app on your home screen.
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It's been a few months, so I'm not sure. I remember seeing that Avast came out of the Czech Republic (supposedly). That page looks very familiar.Did you get it from the right site?
http://www.avast.com/
The Mrs. and I have been doing well with Mcafee. We have a single PC with Windows XPS.
Best antivirus software - Linux
Anyway for MS Windows you can stick to stock. That means Windows built in firewall + MS Security Essentials. Both are free (after you buy a copy of Windows) and do pretty good job, without annoying ads.