Validation Toolkit Docs?

Can someone please point me at the docs for applying server side validation to an existing form element?

I do NOT want to use formbuilder to build the form. All the CSS and DIV crap it spews into my pages I can do without.

I DO want to apply a server behavior to an existing form element that has server validation but I can find no docs on how to set up the error displays on the form elements.

I have no problem setting up the validation so the element is being checked but i'm looking for the docs explaining how to set up error displays on my spry form elements based on the errors coming back from server validation.

The getting started guide for Validation Toolkit will go over this:
validation_toolkit_gsg.pdf

It is the same procedure for both Validation Toolkit and CSS Form Builder for applying these Server Side validations.