I haven't been able to afford the upgrade and haven't been able to talk the office into the upgrade either :( ... but what OS are you using?? i'm assuming your use of "Ctrl+Z" marks you as a PC user.. XP or 2K??

i know of modifier issues with MAC (OS X v10.3 [Panther] )
but it shouldn't affect you...

what happens is during the "activation" process the operating system switches to a secure input mode and disables the Shift and Option keys and the spacebar.

Disabling these keys prevents other network connections from accessing the keyboard input stream and compromising security.

Normally, the operating system reenables the modifier keys after the authentication process is complete.

You may want to contact Adobe directly, they can probably walk you through a solution...

sorry not much help...
:)
retrocity