modify httpd.conf in business hosting

Hello,

Where is httpd.conf located in my hosting package? I'd like to modify it to put Accept.js (authorize.net) in my server and accept credit card. Thanks

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Set environment variables for API_LOGIN_ID and TRANSACTION_KEY using the credentials for your Authorize.Net sandbox account. For example, in httpd.conf, you would add the following lines:

  SetEnv API_LOGIN_ID your_id
  SetEnv TRANSACTION_KEY your_key