hello dear friends

i am running opensuse 12.2 on a lappy.

now i want to upgrade.

note; i have some important things on the lappy.

Thunderbird enigmail with kpgp

- approx 10 GBite E-mails.

well do i need to do someting special in order to make all upgrade processes safe.
note i do not want to loose the mails or the passwords or something elese

qestion: how to safe all the data

is there a special way to safe tbird (with enigmail ) in a single step!?

And after this was done: how to upgrade opensuse 12.2 to 12.3

online with zypper dub
or offline with the dvd - note i allready have one

love to hear