Need help setting up android sdk root folder

Hey guys i've been trying to set up unity to push to my android for a few days now ..i downloaded java 32 bit and android sdk and installed them both but when it comes to unity , when i hit build and run it will ask for a android sdk root folder even though it pulls up the android folder out of my program files and no matter what i click in that android folder (platform, platform tools etc) the same dialogue keeps reappearing asking for the root android folder can anyone help me fix this.
again it pulls up android > android -sdk but still ask for the sdk root folder , apparently it's looking for a Android sdk- windows folder. I have a HTC inspire 4g