Am I missing someting here?
Every Gallery application out there Coppermine Albinator 4Images Gallery etc are dependent on having Imagemagick or GD
This is just a fact
I posted the link above to jhead and his page has installation instructions
Basically your gonna have to have permissions for IWAM and IUSER accounts to have full access to your gallery data and uploads directories just like that which is required for running Imagemagick on windows