[Zope] Add python class to Zope.

[Pattreeya Tanisaro]

Hi! 
	I found some python sources which declared "class" inside.
I tried to call the function inside this class with external method and 
python script but it didn't work out. For examples: Guestbook.py

	class Guestbook:
		def __init__
			....
		def signGuestBook
			....
		def feedBack.
			..
	How can I call the function "feedBack" to Zope?


					Thank you!
					pattreeya .