EDIT YOUR TCP/IP HOSTFILE
1. Start -> "Run" (Windows Key + R)
2. Enter "c:\windows\system32\drivers\etc\hosts" without quotes.
3. A dialog box opens. Choose "Notepad"
4. Now you will see a display explaining what the hostfile is and what it does. Go to the very last line in the entire document, the one that says "127.0.0.1 localhost".
5. In the line after "127.0.0.1 localhost", you will add "127.0.0.1 q4master.idsoftware.com". MAKE SURE YOU HIT "TAB" TO GET THE SPACES RIGHT.
6. Save changes, exit the document.
7. Launch Quake 4. The key will be automatically validated and you can play.
