I started running before at just under 200, and let me say this: starting running involves a lot of walking if you're not already in pretty good shape. In fact, most beginning running programs suggest that you start with at least 2 weeks worth of fast-paced walking, before you even get in to the actually interval stuff.
In other words, if running eventually is a goal, and I think it's a great one, then I say hit the treadmill now and focus on walking. It'll really help prepare you for when you do want to run.
One of the things I loved so much about beginning to run was that every week I could do something I couldn't do before. Even if I couldn't see the progress right away, I could feel it. It was way more motivating to me than taking classes at the gym. But then again, I have terrible coordination, and so I was (like a lot of you guys) always afraid of messing up. With learning to run I was never worried about that.
Oh, and I made myself some sweet music playlists and only allowed my self to listen to those playlists while I was running- I gave myself a non-food treat!


