Missing 45xsession File?

I recently followed the instructions in the O'Reilly book Knoppix Hacks to successfully install Knoppix 3.7 to a hard disk partition. I’m now trying to follow the procedure for Hack #24 (make a kiosk), and it mentions that in the /etc/X11/xsession.d directory there should be a script called 45xsession.d that needs to be modified for successfully booting into Mozilla. While I can find the directory with no problems, I have no such file in that directory. In fact, when I use the Find files function in KDE, I can’t find a file with that name in any directory. Am I missing something here?

Thanks