Hey Clint, I tried out in 2000, I think? They were hiring 8 people out of about 50. Compitition was pretty intense! One thing I recomend is always be the first to volunteer when they ask someone from your group to demonstrate a skill and always tell them your name. Remind them who you are so you are not just a number. Be prepared to run up to pan point with out snow shoes in deeeeep snow, hopefully you will have a boot track the whole way up. Stuff they will want you to know- snow anchors, hip belay, injury scenarios, avalanche and weather, crevasse rescue, z-pulley and others, self arrest, glacier travel, rest step, parts of an ice axe and crampons, knots, they will have you calmly tell a client that they need to turn around and go back to camp while everyone else summits. Thats all I can think of now.
Hope this helps, good luck.