A tool by aBScroll that enables the installation of fan-made content for Pro Evolution Soccer 5 and 6.
To install, extract this archive anywhere and run "DkZ Studio.msi". When this is done, go to the "Language" folder in the tool's directory and extract the contents of English.rar in there. If you are unable to change the language from the tool, remove or rename "Spanish.dsl" and rename "English.dsl" to "Spanish.dsl".
All the credit goes to aBScroll and his associates, uploaded for archival purposes and convenience.