You can download Putty [[http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html|here.]]
Go to Category --> Connection --> Proxy
{{attachment:putty_proxy_settings.jpg}}
{{{
Proxy type: SOCKS 5
Proxy hostname: 127.0.0.1
Port: 9050
Do DNS name lookup at proxy end: Yes.
}}}
It is important to set Yes to DNS name lookup at proxy end. If you don't set this to Yes, Putty will [[TheOnionRouter/TorFAQ#SOCKSAndDNS|leak DNS requests]].