[Zope] Xron on Linux.

I would like to install this tool but as some of you know, there is a problem on Linux. On this message "http://groups.yahoo.com/group/zope/message/61753" says that I have to change the "rczope" and the "start" files. I made a "find" but I couldn't find it. Does somebody know where this file is? Thanks in advanced, Josef.