For all intents and purposes, you need to think of your 'companion' R2006 as
part of Inventor10, which is discontinued/dead. You do not have R2006 as an
individual license.
R2006 the individual license support and updates are still available to
anyone with R2006: the site still shows back to R14, again, for
AutoCAD-only licenses, not the free-companion versions.
--
Dean Saadallah
http://LTisACAD.blogspot.com--