Unfortunately I do not have an English-speaking phone, so I just try to
translate what it says. You're lucky I have a n82 too, so I could guide you
step by step.
On your n82, go to menu, tools, synchronization. Or sync, don't know what
it says
then, you press options key and go to create new profile
you give the name gmail to new profile and press OK
then there is another line to set. applications. you go there, select
contacts, do not know if it's the exact words...
include in sync: yes
remote database: contacts
sync type: both directions.
Go back twice after having confirmed your settings.
then, you have the most difficult one, the connection options.
server ID: you must write, google
transport type: internet data... you leave it as it is
access point: always ask. Or, as you prefer.
host address: *m.google.com/syncml
port: 443
username: your google user without @gmail.com
password: your password
allow sync request: yes
accept sync request: no
network authentication: no
Then, after this, the profile is saved, you select it, you press options
key, and tell the phone Synchronize.
I must warn you, phone contacts are saved in your GMail contact list
Then you go to iTunes and tell it to synchronize your google account with
your iDevice.
I must warn you again, that then, you'll have on iPhone _all_ your phone
numbers of course and all your e-mail address saved into your GMail
contacts.
Say bye bye to all your possible contact organization in groups!
Sorry for
this inconvenience, it's not my fault
Hope this helps