Looks like a project file for 3dS. I've been searching for my 3dS installation to see if I can get something going, but only found some of the files on another CD. It may not work unless you purchase some of their proprietary software for the conversion, but I did read that if you had one of their object files to import to 3dS and worked with it and then exported it it could be converted to a Haptek format with HapDeltaSetMaker, I'm not sure if that's just a compression utility, but I sort of think it's not. I thought it might be worth trying, who knows get rid of the boots at least.