Click "My Account" location at the top right hand corner near your name.
It will tell you which membership plan you are under and whether or not you wish to cancel it. It should say "Cancel My Membership," proceed to the end.
You do not need anything speical to play a original Xbox game. The hard drive is only need for a small eliminator download of about 5mb. You can use any hard drive source as long as its compatible with the 360.
Yes you will be able to play Predator: Concrete Jungle on it. Here is the list of Backwords Compatible games: http://en.wikipedia.org/wiki/List_of_Xbox_games_compatible_with_Xbox_360
it would have to be your Internet connection, bad download with the host? the way internet gaming works for games like halo is there is a host and all other players upload to this host, and download from him, while he is downloading and uploading to them.
if your download limit does not reach requirements, you will see lag when other players do not, and when your upload limit does not reach requirements other players will see lag, while you do not. this is the grounds for network manipulation to cheat.
It can overheat like any system, i've had mine for a long time and the only times i have had a problem with heating is when it wasn't plugged in correctly (once) and when i spilled mountain dew code red in it. just take care of it and you will never have a problem.
Xbox 360 is the better system between the two, i wouldn't say better like gold to bronze, but more like gold to silver. Many fan boys of the ps3 will tell you ps3 is better than the 360 but really couldn't even tell you the specs of the system and why there better or worst than the 360's, all you will ever get is 'better graphics, better preformance, bluray', etc. from here on gamefly all your going to get from most of everyone is simply a pick between red or blue, but i will promise you ask any fanboy proof its better and all you will get is a few cherry-picks among most comparisons of ps3 actually winning. you can head to youtube or google to search for graphics between the two, you will find xbox has better contrast but ps3 has better sharpness.
But this is also a personal view of someone who spent some time ever sense the release among the two came out xbox is better. but then again i wouldn't be to worried about which one dominates, and more worried about features or game titles.
that information wont be released for awhile, you see bungie is no longer making the game and the copyright has been sold to Microsoft game studios(which they will be making Halo for now on). if you are going to look for information is best to check there.
i wouldn't say sense microsoft is working on halo is a bad thing, but a good one in my opinion, however if i see one "lego halo" im done...