The "normal" mode in the actionscript editor has been removed in MX '04.
It's really not that hard to script simple things and you can always drag methods and properties from the menu on the left of the actionscript editor.
Actionscript is really a fairly easy language to learn and if you were using normal mode to begin with you weren't doing anything you couldn't easily do by typing it out, you'll get drop down help to prompt you incase you forget the order of the arguments in the built in methods.