If that's what you want to do:
Turn off "Hide file extensions for known file types." Google instructions if you don't know how to do that.
Go into c:\windows\system32\drivers\etc
Copy "hosts" file to your desktop
Make another copy of it on the desktop, and rename it to "hosts_original"
Open notepad
Open the "hosts" file on your desktop
Make the necessary edits
Copy the "hosts" file from your desktop to the "etc" directory
When prompted for admin creds, do so
open a command prompt
type in "ipconfig /flushdns"
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