In XP what I did and it worked fine for me was to to create in My Network Zone an entry called TM_blocked, then in the My Blocked Network Zones I reference the zone TM_blocked. Under the network zone TM_blocked I added hosts (website URL’s) that I want to block.
In XP this works fine. In Vista 64 bit the web browser still shows the page. To verify I uninstalled CIS, then re-installed and just did the steps listed above and the web browser can still reach the webpages.
Any idea’s on what is happening and how to correct?