i don't know how to disabled register_globals,help

when i install,the next:

"register_globals is enabled. Drupal requires this configuration directive to be disabled. Your site may not be secure when register_globals is enabled. The PHP manual has instructions for how to change configuration settings. (Currently using PHP register globals Enabled ('1'))"

i don't know how to disabled register_globals, where my php.ini?
my web host is in IXwebhosting.com.

help me, thanks a lot.