Lo these many years later I regret to inform anyone here who might be interested, that Bauhaus, the company that marketed Mirage in the United States has closed its doors. Their large and friendly community of users has been abruptly cut adrift. Access to the cumulative knowledge of users, all of the posts, tutorials, galleries and sage advice from their resident Mirage Guru has disappeared in a puff of smoke. (you can imagine what a shock that is if you picture all of ZBCentral disappearing over night.)
HOWEVER…
All along Mirage has been a spin-off product for the U.S. market and, while Mirage is no longer available, the original developers are still very much in business (and have been all along) advancing the original product called TVPaint. Current users of Mirage are offered a sideways upgrade at a relatively reasonable price. Many Mirage artists have already been welcomed into the TVPaint community and if there are any Mirage users over here, you can easily find it via Google.
Sven