Hi Rich
Try google:

There's a msxml sniffer at
http://www.bayes.co.uk/xml/index.xml?/xml/utils/msxml_sniffer.htm, and to
get the browser there's loads, eg
http://www.mozilla.org/docs/web-developer/sniffer/browser_type.html

Cheers
TomSW

 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list