To install the Dawn of War II: Retribution Beta please follow the steps listed below...

1. Login to your myTHQ account
Go to THQ.com and login to your myTHQ account by clicking the “Sign In” button in the top right corner of the site. If you don’t have an account already, you can create one by clicking the “New Account” button, also found in the top right corner. Creating a myTHQ account is free and, as a member, you’ll get access to exclusive content like this.

2. Register the Retribution Beta
The next step is to register the Retribution Beta to your myTHQ account, to do this first click on “Game Registration” at the top of the site. Now select “PC” and type “Beta” to quickly find the Retribution Multiplayer Beta. Once selected, click “Submit” and you will be taken to your game list where you will see your Beta Key. Note, no retailer code is required for this step.

3. Log in to Steam Application for your PC
Make a note of your Beta Key. You’ll need it to redeem the Beta on Steam. If you need to find your key again, it will always be in your "My Games" list when you login to your myTHQ account.

If you have Steam installed and have a Steam account, launch the Steam Application and log in with your Steam account. If you do not have steam installed on your PC, visit http://store.steampowered.com/ and click on “Install Steam” and follow the instruction on how to download the application.

4. Download the Beta on the Steam
Once the Steam application has launched, click on the Library tab in the top menu. Then click on “Add a Game” in the bottom left hand side of the Steam window to access a popup menu. Select “Activate a product on Steam” from the popup menu. Click “Next” and agree to the Steam Subscriber Agreement to begin installing the Dawn of War II: Retribution Beta.

5. Enjoy the Dawn of War II: Retribution Beta
Launch the Dawn of War II: Retribution Beta and crush your opponents!