blocking sites without firewall

well this's a pretty old trick try this out guys open hosts file(doesn't have ne extension)as text file and entries like this127.0.0.1 [sitename]to block i mean the URL of sitee.g:- 127.0.0.1 media.fastclick.netsumthin like that close the browser next time site's blocked so an alternative method for blocking sitescheck it out and reply bak
njoi