go to
http://www.killzone.com
If you DO have a PLAYSTATION®Network account:
1. Sign in to your Killzone.com account.
2. When the dialog box prompts you to link your accounts, click on "yes".
3. Sign in to your PLAYSTATION®Network account.
If you DON'T have a PLAYSTATION®Network account:
1. Sign in to your Killzone.com account.
2. When the dialog box prompts you to link your accounts, click on "sign up here" to open the sign-up form in a new window.
3. Follow the instructions to create a new PLAYSTATION®Network account.
4. Return to the previous window and click on "yes".
5. Sign in to your PLAYSTATION®Network account.
You're done! Click on "OK" to return to Killzone.com. If you accidentally clicked on "no" when you were prompted to link your accounts, or if the dialog box doesn't appear for you at all, please click here.