how i can run games xbox original to xbox 360

The games have to be backwards compatible and you have to have an official MS hard drive in order to play them. You can find information here - https://support.xbox.com/en-US/legacy-devices/original-console/play-original-games

A cool feature that the xbox live marketplace is to allocate server space for ALL the original xbox DLC that is for games that is compatible backwards compatible, and DLC that is from all xbox titles that are free, but I guess some paid DLC can be included.

So here is the story. When you go to the marketplace, you won't be able to find the original xbox DLC, which is normal, because that isn't how it is unlocked or downloaded. To download it, simply insert the disc, and I believe that the 360 looks through the
internet and finds the backwards compatibility file, so along with that, it also downloads all the DLC there is for that specific game.

Now that would be a cool feature.

Before I continue, couldn't you even run original xbox games on a 360 slim? And am I right about how an original xbox game is run on the 360? I remember for people who don't have internet connection to their 360's, they had to download some file and put it
on a blank disc, insert that disc to the 360 and move the file to the 360 hard drive, and that is how the original xbox game can be played on the 360.

Sorry, but Rollercoaster Tycoon is not backwards compatible with the Xbox 360. There is no way to run this game on your console.

All the original Xbox games that can run on the Xbox 360 are on this list:http://support.xbox.com/games/play-original-games

If the game is not on that list, you can't play it on an Xbox 360.

@ IceStorm III...

Emulation In An Operating System Environment... IS A Program Or Second Process Involved.... That Is Run Before The Intended Program [XBOX Original Game] Is Run.. The XBOX 360 OS Has To Run The Emulator, Then The XBOX Original Game...

How Isn't That Running Two Things At Once...??? Where A 360 Game, Would Be The Only Process, Needed To Be Run...

Depending On How Old Your XBOX 360 Is Too [How Many Hours, The Components Have Been Run For]... The Capacitors, Lose Their Capacity Over Time & The Console (CPU/GPU etc), Will Draw More Power & Be Less Efficient... Causing Lag...

Noob..

you can play the full game of star wars battlefront on xbox 360 since it is compatible but no original xbox demos can be run on the xbox 360. trust me i have tried.