firstly, please check where you are posting as i've had to move this from the Winamp section to the SHOUTcast section.
as for the 470 error, had you created an authhash for the stream already and if so does it exist in the config file you are using to run the DNAS? if it is then make sure that streamid=1
is present before the streamauthhash
line as per http://forums.winamp.com/showthread....79532#remember
if that is not the case then pm me a copy of the config file so i can check it.