Microsoft provides both Xbox and Games for Windows Live support through their Xbox support website. Although this website is heavily branded as an Xbox site, you can also submit support requests for Games for Windows Live issues.
Please review the Third-Party Game Support topic to determine whether your question should be directed to the game developer, Games for Windows Live support, or Steam Support. Sending a support request to the wrong party may result in a delay in processing your request.
Please visit the official Games for Windows website.
Currently, these Steam games use Games for Windows Live:
Note: This listing will be updated regularly but may not include the latest GfWL releases yet. Please check the System Requirements on the Steam Store for information on specific titles.
Most of the Games for Windows branded games sold on Steam only support Xbox360 compatible controllers/gamepads as well as normal keyboard and mouse setups.
Some games sold on Steam require Games for Windows software, and may run a GfWL installer during the initial launch/setup of the game. If you see any issues with installation of this application, please try running the latest version of the installer from this page.
For all questions regarding Games for Windows Live accounts and game functions, please contact Xbox Support.
For information on creating a local profile or a list of support countries, please see this guide.