It's hard to advise something because i don't do anything special in script before starting Office 2007 installation and for you the installer starts with the same Wine version as for me.
Do you've got the same problem starting installation from plain Wine?
EDIT.
I checked if I can activate Office 2007 after it has been installed and failed to do that, but found an solution which is already in script so i can now activate after and before installation.
Please install Office 2007 again and check if you can activate the product after installation process if you cannot do it before
Edited by NSLW