I've downloaded the Ultimate Editor and now the PC demo. I recommend anyone after stats does the same. I'm buying the game for the PS3 but I am using this to get an early look at the teams personnel and tactics.
Links below. This is all legitimate by the way. No copyright infringements.
PES2012 PC Demo Download
PES2012 Ultimate Editor
When you have unzipped both files simply open the editor and click the open folder icon. Select the file in the PES2012 demo folder called dt04
When you install PES2012 it will create a folder called Program Files. So the file path is thus for PES2012 Ultimate editor (please note that the portion that is not in bold relates to my PC)
C:\Users\Simon\Downloads\program files\KONAMI\Pro Evolution Soccer 2012 DEMO2\img
so with this you can see all the teams?