Before we go on, BOOKMARK THIS LINK! : http://www.konami.jp/we/online/
Konami have launched a quite excellent official user guide for all PES players, letting you keep up to date with anything to do with online. There’s connection testing, mode explanations and even news on updates!
Also, there’s contact information for anyone who is having problems, or if you just want to send some feedback.
Overall, a great site!