[Zope] Python-based Script Object not present in available object list???

[B.N.V. Raman]

Hi,

I'm a newbie, and i was trying to make the Zope Zoo as per the examples
cited in the ZopeBook. The example refers to making a python based script
object for the Guest Book, but such an object is not present in my Available
Objects drop down list. What do i do? Can i add objects from somewhere?

Thanks,

Raman.