Re: ip hider
Hiding your IP is easier with Linux, but due to this forums AUP I can't tell you how to do it . If it's simply for security reasons, as suggested by others, get a Router as it acts as a firewall in itself, remember to disable UPNP and respond to ping in the routers menu. Also for added online security try using a VPN (virtual private network) gateway, I use ipig client as it's free and secure.
Back from working in Australia for 2 months...