Adding a Host File to your PC

1) Browse to or copy and paste the following into Windows explorer: C:\Windows\System32\drivers\etc 

Note you need to be a local admin to access this folder. 

2) Right click on the hosts file and Open with. Select your text editor of choice. In most cases Notepad is fine. 

3) Notepad will bring up the Host file where you can add the entry. The IP address goes before the hostname as in the below screenshot.