Warning: this is my personal experience, correct as of October 2009 for Zenity 2.28.0, your results may vary! First thing required is a build environment consisting of a console, a compiler, as well as, GTK+ and GLADE. I set one up as described here: http://www.gtkforums.com/post-4848.html#4848. I also installed "Strawberry PERL", required by intltool, and added the path to PERL binaries to the "