How Do You Get an Online Account for Guitar Hero 3 for PC?
- 1). Connect your PC to the Internet if it is not already connected.
- 2). Start "Guitar Hero 3: Legends of Rock." Wait for the main menu to appear.
- 3). Choose "Online" from the main menu.
- 4). Choose "Create New Account" from the submenu that appears.
- 5). Enter a user name, password and the license key for your copy of the game in the prompts. The license key is the number located on the back of the manual, not the number on the back of the box.
- 6). Press "OK" when finished. Your online account will be created at this point. You can now log into it using the user name and password you registered.
Source...