As an Active Duty and soon to drop my retirement paper work CW4 (Jan. 09), I have to say that Greggo and FlyArmy are spot on with their comments.
With that said, I'll only offer this bit of advice: never, ever show up to an Army Aviation Unit and say "I'm here to fly whirlybirds".
Now seriously, I've been flying Kiowa's for 17 years and currently deployed to Afghanistan, so feel free to PM me with any questions that you can't get answered elsewhere.
jfsBoat: You might have to go to the nearest MEPS station of Army base for that. Like FlyArmy said, search
KiowaPilots.com or even try
CavHooah.com - The Internet's Cavalry Authority - Home Page for some additional information.
Rob