[Zope] Content integration question

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newbie question

I'm have a lot of structured content that I want to batch process into a 
Zope installation
some of it i already have in zclass instances that i want to change to new 
zclass instances and other stuff is in a variety of access database and 
Excel  spreadsheets, CSV files etc.

I have thought about using an external database but i don't think it 
warrants it for this situation.

I also develop Mediasurface applications. there is an integration module 
that allows you to import CSV or XML marked up content into specified 'Item 
type', creating a new instance of the type for each record.
Item types are a similar concept to Zclasses.

what i'm getting at is that i need a similar means in Zope to perform this 
kind of integration process

any guidance would be greatly appreciated