I'm a little confused about how exactly this works but I want to run OS X on vista with virtual box, Im pretty sure I can do this with some distro of OSx86 but I want to know if I go down to my local computer store and pull an OS X DVD off the shelf would it work? If it would I'd rather do that since there's no pirating or 3GB download.

If I cannot do that is there any distro I should look at specifically?
Basic specs are:
Intel Core 2 Duo CPU @ 2.00GHz
64-Bit OS

Thanks for the help ~ Blessing.