Quite a few people on the PS3 have complained of port issues, saying the have got the following error when attempting to connect: “Can not connect using UPD port 5730,check network settings”
Here is a solution I have come across:
1. Go to PortForwarding.com – find your router
2.Follow all instructions for setting up Playstation network as a port BUT swap all PS network port numbers and names for PES 2008 (5730)
3. One more thing you may need depending on your router to tell it where to make the ports available e.g playstation not your PC…..but portforwarding told me how to do that.
Try it and let us know how it goes.