Rmagick gem install FAIL

Hello,

am trying to install the rmagick gem using

gem install rmagick and getting an error:

Error: failed to build gem native extention. gem files installed in (path) for inspection

I do have imagemagick installed as the FAQ outlines here:
http://rmagick.rubyforge.org/install-faq.html#win

It seems to work on WIN, i mean i can open up imagemagick in windows…

Will