Hi
I have had problems with the XTAF, I just use the .dic files they work fine on 9.0.1.
I would advise you to go with 9.0.1 FP4 with hotfixes. Unless your Server is used in the Internet with http.
If you need the .dic files I can send you them, of course you can open the install like a zip and just take the .dic files from the german install. I would also consider the Mail templates for other languages aswell.
If your users have acrobat writer, you might get a client crash issue with the 9x Notes clients. I have a work around if you need it.
Good luck.
Douglas Bryant