hey new here just got my new iMac desktop it looks aweosome and everything but i am having a wierd program. i start up the computer and all is fine it is really cool how you dont see the black screen or anything it is all smooth looking with the setup boxes but when it gets to where you should have the normal desktop this wierd program comes up instead. i cant see the start button or my computer or anything it is like some kind of other program on top of it that i cant quit. i have tried everything but when i click shut down it just shuts down the whole computer not getting me to my desktop. any ideas?