Using AdSolution for a "call to action"

Hi,

Our company bought a license for Longtail's Flash player, and we are going to use it on our Web site for our product demos.

At the end of our product demos, we'd like to have a call to action that sends the viewers to our sign up page. Ideally, we'd like the viewer to be able to click on a button or an ad in the video that will take them to our sign up page.

I thought we could use Longtail's midroll AdSolution and serve an ad during the last few seconds of the video from our company that urges the viewer to click-through and sign up. However, we don't want to serve any ads from other companies. If we use this solution, can we show only our one ad? Do we have control over this?

If not, does Longtail have any plugins that would allow viewers to click on an image in the video to go to our sign up page?

Just wondering if you thought this might be possible.

Thanks!