Friends lets move to new trick:
follow the simple steps to do it
Go to Start and type RUN .
Type C:\WINDOWS\system32\drivers\etc
Open the file "HOSTS" in a notepad
Under "127.0.0.1 localhost" . Add IP Name
IP - IP of the site to be blocked
Name - Name of the site (see the pic below for example
Example :
127.0.0.1 localhost
210.210.19.82 www. sifymall.com
Sifymall is now unaccessable . For every site after that you want block , just add "1" to the last number in the internal ip (127.0.0.2) and then the add like before.
Some time in windows 7 pc u just need to give administrative permission to edit on hosts file but this trick works well without any software you can block any website on your pc.