can someone help my psp is telling me a dns error has occured and in

parentesis(8041040f)thats what it says? yes i did all the steps to connect my psp to the internet and it gave me this error message connection to the server failed a dns error has occured (8041040f)
can anyone tell me how to do it so i can get my psp to have internet step by step and also ipod on touch i have a 2wire wireless gaterway and i suppose i could get internet with my psp with this correct or wrong? also on my ipod step to step in connecting it please thank you anyone