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 gcc-helpgcc.gnu.org (for help installing or using GCC), and if that brings no response, try gccgcc.gnu.org. For help changing GCC, ask gccgcc.gnu.org. If you think you have found a bug in GCC, please report it following the instructions at Bug Reporting.
The service directory is found at http://www.fsf.org/resources/service.
For further information, see http://gcc.gnu.org/faq.html#support.