Triangulation with actionscript/flash

I am working on a project that takes signal strength from three wireless access points and then triangulating the user’s location. The location of the access point well be known, and most likely loaded via an xml config file. I’ve only used flash for drawings and very simple animation, little to no experience with actionscript. Can anyone give me some suggestions, hints, or comments to where to start ? I’ve tested some of my math in Matlab, but i’m pretty lost when it comes to action script.

The idea is to get three signal strength entered by the user into three input fields in the Flash GUI. In the background, actionscript will take each signal strength as the radius or distance from the origin of each access point…draw three circles…find the intersecting points of the three circles, and find the center of the intersecting points.

Any help on the capabilities of actionscript would be greatly appreciated. Thanks very much for any comments!!