Is there a free way to run/emulate OS X Snow Leopard while running Leopard? I had a billion problems when I upgraded to Snow Leopard but some software that I don't use frequently only works with it so I want to be able to run those apps while still staying in my less buggy OS X Leopard. I don't want to have dual boot operating systems. OS X Leopard 10.5 is my primary OS. Any ideas?