Fuck. I'm done with milkshape unless someone wants to buy a registration key for me.
I can't save anything, even with the trial version (which interestingly means that there's no difference between the trial version and the real version because you can't do shit without a key anyway).
I'm going to try Blender and see if that works. I found mah own link now >:|
EDIT: Fuck this isn't going to work. Blender can't export in .SMD. I just need someone to find a file converter that can convert from either SolidWorks, AutoDesk Inventor, or AutoCAD to .SMD or whatever file you need.
Sorry guise.