Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.
Download this;
http://www.radeonpro.info/en-US/Downloads/
It's all you need. The profiles are in a drop down box on the right when the Witcher is added too the list.
EDIT:
Once installed, click the add new profile button along the top bar. Locate the Witcher 2 EXE and it will be added to the list.
Then force the profile by clicking on the tweaks tab, and choosing the dirt 2 profile from the drop down box.
