How to block webSites without any Softwares

1] Browse C:\WINDOWS\system32\drivers\etc
2] Find the file named "HOSTS"
3] Open it in notepad
4] Under "127.0.0.1 localhost" Add 127.0.0.2 www.sitenameyouwantblocked.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