I very highly doubt that star... it was made in 1999, same year as FS2 and Tachyon... so at best it'd be DX6 or 7.... plus it was developed for the 3DFX engine / Voodoo cards.
You have to use a Glide wrapper to even get it to run on any recent video card from what I can tell... which being that the branch of THQ
that made this, was their special development division, could very well be related to why this is a unique format.
Knowing that Max produced the models does help you a little in that Max back then, if they were like Novalogic... was probably 3DS Max 3.
It doesn't export to many file types... but as others have said, what these files are now, is not usable. I looked at them in hex (not that I'm a whiz or anything)
and found nothing in plain text to give us a clue. Now something you might try, is I saw there was a patch for SU... you might see if you can lock it up
during the install process, and copy the files it's dropping into the directory. One popular method for games was to make a patch that copied the files to the
install directory, pack them into the archive, then delete the visible copies in the folder. If that is the case and you can catch it, you may get your hands on
uncompressed, or "raw" files that'll give you or someone else a clue.