You can easily add it in a page and the select that page from the drop down in the Contact section of Integral Options.

However, that will place it above the contact form.

You can edit the contact.php file to change this, but it will require a small knowledge of the code.

The file is located in APPEARANCE > Editor, then select Contact.php.

Or you can provide me with admin access to your site and I will do it for you.