Acties before a re-installation?

Hi,
Any additonal information is welcome:
1.data-partition first on a HDD
2.IE7 favourites: export , after import the inital maps are gone,
may bebetter a back-up via C\users\favourites
3.e-mails messages: export, the maps are kept after import
4.e-mails contactpersons: exporteren, after import the inital maps are gone
may bebetter a back-up via C\users\contactpersons
5.e-mails accounts : export / import is ok
6.nieuw account : export / import is ok

Are there other points which may be important?
Can i save the internet connection: i am using a laptop with wireless
connection?

Regards
Huib