You'd have to have a hypo to eventually get ghosts from an anery. You wouldn't get them until the second generation, though. If yoiu bought a ghost and bred it to your anery, then you'd get all anerys het hypo. You could then breed two of the siblings to gether to produce ghosts.
Snows are anery/amels. If you bred the anery with the snow, you'd get all anerys het snow (amel). That is unless your anery is het amel. Unless your anery is het amel, you wouldn't get snows until the 2nd generation either.