Intro video at each program start

I am running Parallels Desktop 6 switch to MAC edition and Windows XP on an iMAC. No problems with installation and operation for the past year. The only thing that bugs me is that I can not get rid of the black welcome screen that plays the introduction video and asks for the 3 options what you want to do. Checking the box that the intro shall be skipped at the next start of the program is ignored by the software. Does anybody have an idea how the intro video can be suppressed?