What is the best thing out there that can use XML to dynamically generate
a browser UI ?

I am interested in creating a dynamic browser UI by feeding IE XML strings
from a business object. The XML Schema (xsd) stuff looks promising. It would
appear you could give an IE add-on an XML string and an XSD string and it
could produce a page that is fully editable with validations. I looked at
XML Spy some but I can't tell if it's XSLT designer in combination with their
IE add-on can do this.

Thanks for any help,