How to Block Websites
 
   Block a Website on Your PC  1. Open Windows Explorer and navigate to  C:\Windows\System32\drivers\etc. If Windows is not installed on C:,  substitute the appropriate drive letter.  2. Double-click hosts , and select Notepad  when Windows  prompts you to choose a program. If you don't get the prompt, or if the  hosts file opens in another program, open Notepad ( Start, All Programs, Accessories, Notepad ), and then navigate to hosts by clicking File, Open  within Notepad.