Helium is a Schematic Framework that allows you to create Flow-chart User Interfaces within 3ds max, via maxscript. There are some interesting examples on the Helium page, and the current version (v0.8) can be downloaded.
Updated 12 Nov 2005: The site seems to be down since just after I posted the link. I’ll let you all know when the site is up and running again.
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plugin sounds rad! but the site doesn’t work :[
take this out. link doesn’t work