How do I load up sample android programs in Tegra?

I am trying to run the sample program from Eclipse project - But I am having hard time doing that. Mostly I get the Build.xml error.

My main objective is to develop games in Android. But I will be using my game engine and OpenGL code from C++, Any pointer or tips to get me started would be appreciated

Thanks

we’re targeting a release for next week that will make this MUCH easier