You can find the Pro Evolution Soccer 2011 Patch and related trial versions here.
Since the game is "abandonware," many players turn to community sites for the ISO files. Download PES 2011 PC Game 2010
If you are running the game on a very old laptop, the Ragnos1997 Low Specs Experience can optimize performance. 4 - PES 2010 - Install Guide | PDF - Scribd You can find the Pro Evolution Soccer 2011