I use Linux, and even though I'm not pretending my system is virus-free, it's generally accepted that even an aggressive firewall is not a requirement.
I want to install Windows 7 on a machine which I will use strictly for playing games. Browsing on it may even be discarded, if necessary.
So, for the two to three hours a week I'll be using the OS - making it effectively a console - do I really need anti virus software, or can I do without the annoyance of advertisements, scans etc.?