You will do the following:
(1) someone fills out web form through unbounce.com landing page. This is done via web hooks at http://support.unbounce.com/entries/307685-How-does-the-form-webhook-work-
(2) this form triggers a new contact to be created in officeautopilot.com CRM system and have a specific tag on their contact record. This is done via office autopilot API at http://officeautopilot.com/wp-content/uploads/2010/10/API_reference.pdf
We will need to be able to modify this web hook / API connection for other landing pages in the future. They will function very similar, but the tag added to contact record will be different.