xsl:counter and xsl:counter-increment with XSLT

The problem is that, upon changing from XSL to XSLT, my xsl stylesheets no longer support the use of "counter" and "counter-increment."  How can I regain the counter feature?

I used XSL with the following stylesheet attribute:
   xmlns:xsl="http://www.w3.org/TR/WD-xsl."

However, now I use XSLT with the following stylesheet attribute:
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform."




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