A recent on-going trend in web page design is for page layout to use pure CSS based layout instead of TABLE elements. [See References Zen Garden, Free CSS layouts for just a few examples.]
What are Control Adaptors? ASP.NET 2.0 has a new extensibility model built into it called Control Adapters. Control adapters allow you to plug into any ASP.NET server control through this model and override, alter or tweak how that control is rendered.
The great thing about control adaptors is they do not require developers to change the way they program against existing controls or to use new controls on a page. In fact, the developer can be completely unaware that a control adaptor is being used, because the control adaptor encapsulates all the functionality required. The ASP.NET 2.0 CSS control adaptor white paper can be found here.
A new Beta2 of the control adaptor toolkit is available and you can download it from here.
Scott Guthrie’s original article is here: CSS Control Adapter Toolkit for ASP.NET 2.0. His update article CSS Control Adapter Toolkit Update contains a Quick Start walkthrough. Excellent stuff!