flash and the back button

I have a flash application I made where a user can search an inventory of over 30,000 diamonds.

theres really 3 pages (or states) to it, 1 the place where you inter your criteria, 2 the place where you view the diamonds that matched your criteria, 3 the stats of the single diamond you chose from the list on page 2.

I have my own back button in the flash to get to the previous flash states. but no matter how obvious I made my back button people are just too used to the browsers back button and keep hitting it to go back and it completely leaves the page with the diamond search causes them to loose their search criteria.

I am looking for a way to make it when they hit the back button to take them back to the previous state instead of leaving the page.

any help is appreciated


THANKS!