My company is having a subscription drive for a limited time and, coupled with a strong promotional push (mostly happening on radio), I expect some traffic to our website during the next few months. I'd like to create one of those boxes that appear when you come to a website to let the visitor know how they can subscribe and provide a link to our subscription page. Is there a way to integrate that into a XARA website? I know some services like AWeber have the function but I am wondering if it's possible natively. If not, is anyone using a service you like that accomplishes this?

Thanks in advance.