How can Block any Websites in your Windows XP / Vista / Win-7 OS

This is a simple trick which is work with the notepad and using this you can block any of the Website in you computer and restricts to other users to using that sites in your browsers.

so now I'm giving a way and trick to block any of website using a notepad and also you can use this trick in your office or home any where to restrict the sites from anonymous users etc while you must have the computer admin privileges first.
Here in the above image you can see a block yahoo site which has to be blocked. This is an example to block WWW.yahoo.com in browser.
Lets begin to block any site in your computer browser you just have to complete few of the steps.
1.Click on the Start Button >> All Programs >> Accessories >> Notepad
right click on the notepad and select Run as Administrator in case of Vista and Win-7.

2. When Notepad has to opened then click New >> Open File

and paste the following path or go manually whether your window drive is C if any of other then you can replace C to you Home drive latter.

C:\Windows\System32\drivers\etc\hosts

and hit enter now you can show a file is open is look like as.

3. now you can see at the bottom an IP address and the host name so here you can place your site name with an Localhost IP address 127.0.01 and then site name as see in the image.
4. for example If you want to block www.abc.com then simply write 127.0.0.1 www.abc.com
5.Save file and open browser and write www.abc.com you can see that you site has to be block.
You can replace www.abc.com to any site name as you like.
Note: If you unlock the site simply delete only that code which you have to place in your file.