In general, and I may gain grunts from some on my opinion, DO schools tend to look past numbers MORE OFTEN than MD schools. I was accepted at both, but DO schools tended to ask me more about experience and skills rather than the courses and MCAT scores. But to directly answer your question, I would think that a little better than mid-twenties, ie 26,27...would be a good bet for MOST DO schools and a solid GPA. Med schools MORE OFTEN look for that magic "30."
But again, this is just a general opinion and not a certainty. FYI, I chose DO school over MD!
Hope that helps! Just do your best and everything works out--don't give up. :wink: