[Zope] Zope license

Hello Zopers, for the first time in my life a business asked me for a dinamical web site that can start off a cd rom. I gave them a demo made in Zope and now they ask me about the Zope license. I read the Zope license and I can translate it in Italian for them but I wonder wether ther's something more about the business use of Zope. Please help. This is SO important to me! Thanks so much!! Bye Catonano