[Zope] workflow in zope ?

hello guys, can anybody please let me know how to create workflow in Zope and to manage it. Thanks, Girish Trigent Software Ltd. Khanija Bhavan, I Floor, #49, Race Course Road, Bangalore-560 001 Phone: +91 (80) 2268790 Fax: +91 (80) 2268791 Web: www.trigent.com