Zier1271

I am new and having some trouble. Trying to install gallery 1.5.3. Keep getting an error that says"cant find imagemagick location." I installed it but i put it under the root or should i put it under public_html. Also when the gallery installation asks me to type in the location what do i put? not sure what to do...be at this for hours...please any help will be greatly appreciated Thanks, Zier1271