How to Block Site

1. start run
2. type
notepad %windir%\system32\drivers\etc\ hosts
3. scroll down to below u will see..
# 127.0.0.1 localhost
then
# 127.0.0.1 add ur website address name
eg:
# 127.0.0.1 www.example.com
>now 'example' is blocked..