I just tried what Michael suggested, used notepad++ , created a line.js file in c:\scripts,
In MoI tab-> full path to script , worked ok for me... Win 7 64 bit, MoI 2.0. Don't have ver3 here at work


Cheers, steve

correction, create line works, but circle and box don't, type mismatch error... this could be a moi version 2.0 error?