I have a Belkin Pre-N router and would like to block some webpages, however Belkin offers a pay service. I really don't want to pay to block webpages and this is for business. My home Netgear has where I can block sites by words and even the http. I would like to know what Pre-N router out there can I block specific webpages without paying extra? Also is there a program that I don't have to install on all computers to block websites, that works with IE and FF.