Try this
Try PES4Launcher
http://www.pes4launcher.co.uk/
From pes4launcher site:
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"Pes4Launcher allows online multiplayer games of Pro Evolution Soccer 4 and Winning Eleven 8 International online with no need to exchange IP addresses.
It boasts an easy to use interface and live scores in all the rooms! It enables users from around the world to challenge and chat with one another online at the click of a button.
Getting a game of Pes4 online or WE8i online has never been easier! "
If you are interested in LAN game:
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"Pes4Launcher is a great tool to use for LAN parties! Simply ensure that all users tick the "LAN Connection" option in the file menu and the launcher will function through a LAN network just as it does online!"