DreadMoth: As far as I know the issues with the game seem to be more related to the actual hardware rather than drivers or the operating system in use.. I think I remember reading something about the game needing a 'fixed-function' 3D accelerator to work properly?
I didn't see them offhand on that Facebook page, so are there some pictures of what kind of graphical errors there are, e.g. do they make the game pretty much unplayable? "'Rage' on ATI cards" level problems?
Or is there some kind of list of cards that run it ok, and which don't?
I've been meaning to re-install the CD versions of both Heavy Gear 1-2, just to decide do I try it on my newer laptop, or should I dig out some old desktop PC (one has ATI Radeon X800 card, another one has 3Dfx Voodoo 2 card... and I have access to even one old Pentium-133 system with the first 3Dfx Voodoo card...) Of course I'd prefer playing it on newer HW.
I remember there were some graphical issues already with the first HG when it was released, some black boxes with either Voodoo 1 or Voodoo 2 cards... I don't know if they happen on new HW as well.