Hi Henrik,
Go to: User/Library/Preferences/ and locate your CatDV preferences file. Drag a copy to your desktop and send it to your other computer.
On the other computer, place this preferences file in the same place on that system that you got it from on the other. (User/Library/Preferences/) It will overwrite your existing preferences file.
You may need to have your license code handy as CatDV will lose the registration so you will need to re-register. Once this is done, CatDV on both computers should have exactly the same fields and layouts.
I hope that helps,
Whitney