download the zip, extract it
rename your existing last window nds file to xms-lwwe.nds
and then throw it into the new folder you created when you extracted the zip
run the batch file
your new nds file is named sxs-lwcw.nds
and it's safe to rename/move/use
if you're trying to match up 3 blocks and they reset,
then you're doing something wrong unfortunately.
there is no PLAYING difference between the pc and
the ds versions, and i've played them both, and the
demo. all the same.