c++ eye detection

need c++ code (running example inside simple gui) of eye detection in photos. the photo should be displayed with cross hairs where the eyes are. The code should run quick because at some point i have to copy it over to (slower) actionscript. I would be happy if you could provide a slider control which trades performance for accuracy. you can use any library to load save images and to create gui, but NO external libraries can be used for the detection algorithm(because i have to port it to actionscript). ## Deliverables Needs to be in a visual studio 2008 project which i can compile and run as a simple gui, where i can select photo's for testing.