Hi mate,
can only help you with xp home. below are the manaul file/folder position for both emails and address book. if running the "Files And Settings Transfer Wizard" doesn't work. sorry can't help with NT but i am sure misrosoft Q&A could there.
to back up emails and address book XP HOME
ADRESS BOOK -: go to C:\documents & settings\user name\application data\microsoft\addressbook
and then save the files address book and the wab file
EMAILS BACKUP -: go to C:\windows\application data\identities\large numbered folder\microsoft\outlook express
and then save all the files in this folder.
Cheers from fayward, Aussie! Aussie! Aussie!