Well, I've never made my own, so I can't really give you input on that.. I just changed mine to a preset that came with KernelBasher, (in my case the XBMC logo). It was retardedly easy, just picked the .x file and applied..
pSc
ps, I'd like to know what you come out with, as I'm bugging my friend to do me up something in 3ds as he's been dabbling with directx recently..