You have different compilers for imagick and php as Jeremy said. You can check your compiler with echo phpinfo();
There is good instruction (but this guy use apache)
hxxp://jeremycook.ca/2010/06/06/installing-imagick-under-apache-on-windows/
There is an IMPORTANT note. As they said ImageMagick 6.6.6-5 is compiled with VC10. So if you make as in instruction i give, it will be crashed anyway. To fix it use ImageMagick-6.6.2-Q16 (this build is the last that works for me. Seems it compiled with VC9).
look here for old releases
hxxp://image_magick.veidrodis.com/image_magick/binaries/
ftp://ftp.imagemagick.org/pub/ImageMagick/
I make this stuff works just a couple hours ago :)