i doubt you can transfer your messages...
Contact transfer was a bit of a trouble for me..
If nothing works, here is a long way:
Sync with google contacts
export the contacts .. i think its .csv or some similar format
import it in outlook
sync outlook with N900...

But im sure someone will tell you an easier way..


also, if you want instant facebook notification, you have to leave your email to sync very often..
a simpler way- and easy on battery- is to set facebook to text you the notifications

edit: I looooveeee the way Blackberry deals with facebook and emails.... Nothing can beat that.... Had a storm2, but I didnt like the clicky screen