Hi Diego,
The M52230DEMO and the M52233DEMO are the same, if I remember correctly. Freescale ran a worldwide seminar series in 2Q06 (I did them in the UK) and we used the M52230DEMO. This part number is not available to buy, but we just badged up the first production-run of the DEMO board with the 52230 part number. If you've got a M52230DEMO, you maybe went to a seminar.
Just use the M52233DEMO materials, and you'll be find. Within CodeWarrior for CF V6.3 Beta you can use the M52235EVB stationary for the demo boards.
Mark