I always pronounce it "Kry-sor-ah". I always kind of had a feeling that that was the wrong way to say it... but I didn't care. Well, at least, I didn't care by the time I realized I was pronouncing it wrong. Haha!
I have to say, though -- "Kri-zah-oh-ra" sounds pretty. I might just have to re-train myself to say it that way...