How to customize CalZope zpts

Hello. I'm dealing with CPSSharedCalendar and CalZope, and I want to 
customized the calendar some views (year.pt, month.pt, week.pt, day.pt 
and event.pt). The problem is that I do not know how to do it because I 
can't find those temlates on the skins folder in my CPS 3.4.4 instance. 
I've read that CPSSharedCalendar uses Zope3 paradigms, and that if I 
want to customize somehting the calendar I have to do it in 
CPSSharedCalendar, but...I can't find those zpts in these product either.
Any ideas about how can I modify the views I mentioned above?

Thanks a lot!
-- 

Miguel Sánchez Beato

Técnico de software libre

Fundación IAVANTE

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