I had some problems, but then I did it with Alcohol and it works. But let me say that the patch is totally crap. Only a couple translated editing menus and the strategy screen (like in the other patch from Supapuffy), nothing special, not worthy to waste a CD. You can register on www.pes3.de on the forum, there is a instuction with pics.
If you´re to lazy to register I have an instruction without pics:
1. Get the newest Alcohol 120 version from their website, it´s a trial version. Don´t know the url but search with google, no problems
2. Open it, go to Imageassistant (or at least sth like that, don´t know the English desciption, I have the German version)
3. Select the drive where your WE7 is in
4. Go on and choose the path where to save the image, click on the right side of the screen on "image-format" and choose iso, the default setting is something different. Name of the image should be WE7(.iso) and start
5. Apply the patch with ppf-o-matic 3.0
6. Open your WE7.iso with Alcohol 120, right click on the image, then choose the second option (the hotkeys would be ctrl+b)
7. Let everything by default except burn speed, set it to 12 and start