I spent the bulk of today trying to get a Server Side and Client Side .Net Validator to work on a CheckBox List. Server Side was easy. Client Side would be easy, but trying to do them both, and as generic as possible has been a real chore. I do hope Whidbey (ASP.Net 2.0) will really enhance the validators. A few months ago I did create a cool piece of code. It basically was a souped up Validation Summary. I will refresh my memory on the features and edit this.