没成功，把几篇不错的文章先记录下地址
http://bbs.pcbeta.com/forum.php?mod=viewthread&tid=1437039
http://bbs.pcbeta.com/viewthread-1418055-1-1.html
http://blog.zhaojie.me/2010/09/how-to-install-mac-os-x-snow-leopard-on-virtualbox.html
http://cleris.diandian.com/VB-Mountain-Lion
