My eldest daughter had two strokes at a year and half old (long story, bad hospital)... anyways, she doesn't have ADD/ADHD, which is a chemical embalance, but damaged brain tissue that causes ADHD "like" behaviours. Obviously, the meds didn't work (and I halted them immediately when she started acting like a little crack head, rocking back and forth and picking at her skin).
What we actually did, was a lot of behaviour modification (and we're still working on it), and for the inattentiveness, we gave her a caffine drink in the AM and one at lunch. Seriously, it did imporve her focus. We watched the sugar content, etc., but a cup of coffee (small, and with plenty of milk, plus she was 6 at the time, I wouldn't recommend that for a younger kid), or soft drink did help.
There is also a pill called Calm Forte you can get at Walgreens that some people say helps.
Otherwise, it is as the first poster said, behaviour modification, one on one time, and a lot of attention are keys. Med's are NOT the cure all, and the studies they are coming out with as far as the long term effects are scarey. Good for you for looking for an alternate approach.