I just got a old xbox, how do I convert it to be a Amiga?
You will first need to mod the Xbox. Either Soft or Chip, it doesn't matter. Then load a Dashboard onto it that will run UAE-X and then UAE!
There are a lot more stps then that, btu that is the gist of it.
If you have never moded an Xbox before, PM me and I can give you a few pointers.