Hot on the heels of the latest RMagick update, Kaspar Schiess has 
uploaded a Win32 gem for RMagick 1.9.1. This gem includes ImageMagick 
6.2.3 as well as brand-new support for the JPEG2000 format. Thanks, Kaspar!

To install the gem, download the .zip file to a temp directory, unzip 
it, and follow the instructions in the README file.

RMagick is an interface to the ImageMagick (www.imagemagick.org) and 
GraphicsMagick (www.graphicsmagick.org) image processing libraries. 
RMagick supports more than 90 image formats, including GIF, JPEG, and 
PNG. RMagick now includes RVG, a 2D drawing API based on SVG. The 
package includes comprehensive HTML documentation.