I'm assuming you're asking how to move your Beta A world to a Minecrack world?
It would probably be best to start over with a new world so that you can all of the new terrain generation for red power.
If you don't simply backup your server folder and install the Minecrack pack (by choosing Filters: server in your client launcher and download the pack). and then copy over your world directory into the new minecrack server directory, and start it up.