Steps:
1] Browse C:\WINDOWS\system32\drivers\
2] Find the file named "HOSTS"
3] Open it in notepad
4] Under "127.0.0.1 localhost" Add 127.0.0.2 www.sitename.com ,
and that site will no longer be accessable.
5] Done!
-So-
127.0.0.1 localhost
127.0.0.2 www.blockedsite.com
-->www.blockedsite.com is now unaccessable<--
For every site after that you want to add, just add "1" to the last number in the internal ip (127.0.0.2) and then the add like before.
that is
127.0.0.3 www.name.com
127.0.0.4 www.name.com
127.0.0.5 www.name.com
and so on
