FYI: I've got an upcoming presentation on O-R mapping in .NET.  Here're the details:

Time:  Thursday, December 2, 2004 @ 6:00pm
Place: GulfNeTug Dot Net User Group
         Sun Hydraulics
         701 Tallevast Road
         Sarasota, FL

Abstract:
You've probably heard the whispers:  "Psst.  I've heard about this O-R mapping stuff..  seems kinda weird to me; surely it can't work as well as writing my own ADO.NET code..."  The answer is yes; it can and does work as well, and you don't have to bother with code generators or ongoing maintenance of ADO.NET code when you use them.  O/R mappers do ADO.NET for you, allowing you to focus on more important aspects of developing a data-driven application.

J. Ambrose Little will introduce you to the concepts behind object-relational mapping as well as illustrate those concepts by looking at the code underlying an existing O/R mapper called DataAspects.  In addition, all attendees will get a free site license of the soon-to-be-released DataAspects library to use in their own projects.

Recommended Prerequisites:
Familiarity with .NET (particularly ADO.NET) programming.
Familiarity with obejct-oriented design and programming principles.
Familiarity with relational database development, especially SQL Server 2000+.