Greenlotus - medication absolutely works for our inattentive type DD, it's not without complexity and issues but it continues to be the best a all able choice we have. I do note that my space cadet girl is on a higher dose of concerta than hyperactive/impulsive boys we know (when they were her age). She's still not on a high dose, but a very small dose seems to go a long way for a bouncing off the walls boy...
There are some great articles on the particular risks for in attentive girls. And also research (that I can't remember where I read) that found hyperactivity/impulsive behavioural cause a great deal of disruption and difficulty in the classroom, but have far less impact on the actual child and their achievement and success in life than the inattentive behaviours that no-one notices in the class...