Modify the message displayed to users when email verification is required.

Hello,

I need to modify the message that is displayed to the user when they create an account that says:

A validation e-mail has been sent to your e-mail address. In order to gain full access to the site, you will need to follow the instructions in that message.

I see the function that creates the message is logintoboggan_user_register_submit($form, &$form_state)

Can someone please let me know how I can override that?

Thanks,
Andy