This is just for the files.

Download the JAR file: http://mardou.dyndns.org/Privat/filesilo.nsf/file.xsp?action=openDocument&documentId=E1E0D02D904BD32DC1257C7700741EC9

Copy the JAR file into the folder

<DOMINO_PROGRAM_DIR>\jvm\lib\ext

Restart the server. Don't forget to install the XSP part via an updatesite as well.