Nice :D. Congrats. It's just shows that it you make up your mind anything is possible. I also went from 227 to 154lbs in 1,5 years some years ago, even though I gained quite a bit of weight again by now (doesn't really show though xD). I just cut dinner and started exercising every day for 40-60 minutes or so by myself. But for the first 2 months or so I started by using Wii Fit, which, if you have lots of weight -is- effective in the beggining xD.
Watching the events of the cosmos unfold in tears and solitude