Finding Wi-Fi- Password When iPOD Touch is Connected?

i'm trying to find said pw to connect my ps3 to the internet. ive tried looking for the pw on my connected laptop, but any time i go to look at details from the network and sharing center, windows explorer crashes. obviously from the title i have my ipod connected as well. is there a way to find the pw from my ipod somehow? i know i found the pw before, but that was over a yr ago, and i seem to have lost the card i wrote the pw on. :P all i got from google was how to connect initially via ipod despite searching for after getting connected

Bottom of the router?
If you haven't changed it? Or you could just ring your provider and request a new one.