[magick-users] Install problems on Vista

[duc.sequere.aut.de.via.decede at imagemagick.org]

> Unable to execute file ppm

When you run the install script, you can uncheck the PerlMagick installation
box and ImageMagick should install without complaint.  If you need PerlMagick,
make sure you have installed the latest ActiveState Perl release before you
attempt the ImageMagick install.