This is the one I used, it's for the Xbox, same principle if you're on PS3 though:
Just change the settings of your network to the DNS given in that video. It took me less than a minute to do.
Edit - don't even worry with the video, just change the DNS of your network to this and you're good to go:
Primary DNS: 208.122.23.22
Secondary DNS: 208.122.23.23