Ive downloaded scriptographer and installed the most recent java SE runtime enviroment. The .zip file was downloaded and unzipped directly into the illustrator CS3 plugins folder as instructed, and when AI is opened the scriptographer window is available to use but when i go to open any of the scripts, such as tree or growth from the window into a new blank document in AI this error message appears in an error window:

Windows Script Host

script: C:\Program Files\Adobe\Adobe Illustrator CS3\Plug-ins\Scriptographer\scripts\scripts\spiro.js

line: 29
char: 1
Error: 'Dialog' is undefined
Code: 800A1391
Source: Microsoft JScript runtime error

i seem to be having no luck using this application whcih is a shame as it looks brilliant to use :(
any help on this matter will be greatly appreciated

Justin