Just bought an Ipod Touch 8gb and love it so much. I am looking for an application, preferably free but does not have to be, and available from Itunes, that can quickly turn wi-fi on and off so that I can preserve battery power, rather than go into settings and turn on and off from there. Any recommendations please? Secondly, can you lock the touch when turning off apart from having a password to get in? I want to prevent it turning on when I am asleep, as it may have done last night...I was seen to be online on Facebook, when I was not! Many thanks!