I, too, want to be cremated when I pass.
To answer the question, I don't believe it matters whether a person is buried or cremated. It's the soul/spirit that comes back not the physical body. So no matter what, Hmong people will still believe in ghosts.
![Smiley :)](http://www.pebhmong.com/forum/Smileys/Lots_O_Smileys/smiley.gif)