You mentioned Ionic's Isapi Rewrite Filter (IIRF). The updated site is http://cheeso.members.winisp.net/IIRF.htm
IIRF includes regular expression support, RewriteCond, RewriteRule, and auto-reload of the settings file without restarting IIS. It's free.
Ionic's ISAPI Rewrite Filter
You mentioned Ionic's Isapi Rewrite Filter (IIRF). The updated site is
http://cheeso.members.winisp.net/IIRF.htm
IIRF includes regular expression support, RewriteCond, RewriteRule, and auto-reload of the settings file without restarting IIS. It's free.