[Zope] Import Modules

Hello, I manage my own servers developing web applications and I would like to remove the import restrictions of python modules in python scripts. Is it possible? How can I allow other modules to be imported? I have been using external modules but it is starting to become nonproductive since I have to create functions to simple problems like md5, re, etc, and just using the needed modules would be much simple. I use Zope as an application server and my clients do not have access to the ZMI, so I'm not concerned with protection against misuse by my clients. Thanks in advance, -- Luiz Fernando B. Ribeiro