World Golf Challenge 2011 is now available as a standalone download for free without the portal and no activation code required. There is full functionality of the course designer and game except for playing with other players over the internet. Internet play still requires the portal and an activation code. Request a free activation code by leaving a message on the forum. Graphics updates created by the community are also rolled into this download so no need to download them separate. Find it as the top link on the utilities page.
See the ReadMe.txt included in the download for instructions.