Niksem -
I'm an international student (not U.S. citizen, not permanent resident). I've finished the MD/PhD application process. Applied to 11 schools, got accepted to 10. (Yes, Harvard rejected me without an interview because they said that international students cannot be accepted to their school).
I'm not outstanding in my application, but I had some really solid research experience (no pubs though), 3.9 GPA, 35T MCAT. I go to top-10 undergrad school. I hope that helps you.
Go into the MSTP Boulevard Thread, if you're interested in MD-PhD. It's much more convenient for international students, although finding funding is always an issue. (maybe you don't have that problem). Also look for posts from "Original" another SDN'er. He's also international and has hoardes of acceptances to boast.