External task with no authentication required.

We have a developed a Flash hazard identification tool that we would like to link into a course.

Before now we used to link our tool to Moodle through adding a URL resource, though there was never any way to know if the student had found all of the hazards within the environment.

The tool we have created displays a congratulations button once all hazards have been found, so I'm curious if this could tell Moodle that the task was completed, maybe that continue button just links to an exam.

The tool look like this: http://www.clients.tourvista.co.uk/vt/elearning/domestic/kitchen/

Any ideas how I could achieve this?

Cheers

Tom