I have an article in the March 2009 (Issue #186) issue of .net magazine, sold as Practical Web Design in the United States. It is actually a two-part article and this is just part one. In this first part, I talk about building a web form with HTML/CSS that anyone can use. Then in the next month, I talk about enhancing the fun and functionality of the form with jQuery.
You'll have to snag the magazine to read the full tutorial, but you lucky saps can view the demo right here right now!