RS320plus for 2010 Highlander SE

I just purchased the RS3200 plus for my 2010 Highlander SE, I saw the DIY on the install, but the question I have is not about that. Before I do the install I am calling around to every dealer in my area to get a price on the activation. Not a single dealer I have called knows what I am talking about. I even called Toyota US sales to complain about the lack of dealer's knowledge and they are telling me I would need more than the RS3200 plus and that there is no hint of any alarm currently in my vehicle. I have the 2010 Highlander SE with the Engine immobilizer and Keyless entry, do I have an alarm installed or not. I am now totally confused. Any help is greatly appreciated. Thanks.