Welcome, Don.  For future reference, the particular forum that you have posted in is dedicated to support of our forums module, not general questions.  At this time, our general purpose forums are still located at http://forums.asp.net/90/showforum.aspx.  For more general questions like this you'll get a lot more resoponses with a post there.

However, to answer your question...

There is no versioning and workflow built directly into DotNetNuke per se'.  Some modules implement it for their own functionality.  And the core has versioning and workflow on its roadmap for this year.  But there are other ways to achieve what you are suggesting, it just depends a little on what your process requirements are.

The most common way is by using Roles to keep work in progress visible only to Administrators.  In this way, your editors can change whatever they need to and then an administrator can change the view rights associated with the page (or module) so that it now becomes visible to other site visitors.  Others also accomplish these processes with various forms of database replication.

Post in the general forum I referencd above... you'll get some more replies.

Cheers,
Scott

Scott Willhite, Co-Founder DNN