As you can guess... i can't seem to re-enter my CD key. ****I AM NOT ASKING FOR A CD KEY**** I just can't seem to find the place in the library where I can delete the preference. Heres the story: "I was just opening the 'Halo' file and clicked on 'Halo' when, yes, It asks me for a CD code I was exited so I figured I'll find that out later and just click OK." BUMMMEEEERRRRR Now guess what? I can't play. yes, I looked for it in the library. Not there... HHHEEEELLLLLPPPPP!!!!!!!!!!!