Opening specific scene from eclipse

Hi, I have an android app(and later iOS) with unity which has a native menu and I want to launch unity scene from there. I can launch the default unity scene but what I need is to open a specific scene from eclipse which may not be the default scene in unity. If there is any specific way to do that would be great or even if I can pass a parameter from eclipse to unity scene that would be great too , because then I can analyse the parameter and launch the considered scene.
I'll appreciate if you can help me with this.
Thanks very much