If you need help installing, using or changing GCC, there are two ways to find it:
Send a message to a suitable network mailing list. First try mailto:gcc-help@@gcc.gnu.org (for help installing or using GCC), and if that brings no response, try mailto:gcc@@gcc.gnu.org. For help changing GCC, ask mailto:gcc@@gcc.gnu.org. If you think you have found a bug in GCC, please report it following the instructions at Section 12.2 How and where to Report Bugs.
Look in the service directory for someone who might help you for a fee. The service directory is found at http://www.gnu.org/prep/service.html.
For further information, see http://gcc.gnu.org/faq.html#support.