PESFan have buddied up with maremas (maker of cool PES 2010 videos) and produced a quite excellent PES 2010 PK Tutorial video!
[youtube]http://www.youtube.com/watch?v=SBkGsZZTP3A&feature=player_embedded[/youtube]
Really is a must watch, as penalty kicks do take some time to get used to.
You can view a better quality video, plus added tips on the PESFan site by clicking here!