Filter Rules: Creating a new Filter Rule
Filter Rules control which pages are indexed and which pages are promoted. They can also be used to manage the URL-updating behavior during redirects. Custom filter rules may be created in the Trial Shareware and Registered Shareware versions.
To create a new filter rule, go to the "Admin Page" of the search engine. Select the "Filter Rules" link. At the center of the page there will be a list of all existing rules. Choose the "Create New Rule" link at the top of the list. Fill out the form, and choose "Save Data". Your rule will now be included in the list.
"Filter Rules: Creating a new Filter Rule" http://www.xav.com/scripts/search/help/1066.html