[Zope] Zope and ColdFusion question:

We have a client that uses Coldfusion and we are pitching Zope to them for its workflow strengths. Here is what I think I know about Coldfusion: its java-based? and has a J2EE server. Am I correct. They might want to use coldfusion to continue to develop their content but would be amenable to a Zope server. Does anyone have any thoughts or experience here. thanks in advance Jim