Pedro, hows it going?
Check the link vpmedia posted above:
http://www.sas1946.com/main/index.php/topic,21514.msg239532.html#msg239532It is a HUGE package (19 parts) but well worth the time to download.
As stated there, this will take 1946 from the box disc to the latest and best version available today.
The package provides the ability, through a selector, to load your choice of mod packs, including DBW, DBW 1916 which is the WWI option as well as UP3, Stock game, SAS modact 3.
If you have never used mods, be prepared for a whole new IL2 experience.
DBW is built strictly for offline play and adds an immense amount of content.
I have not gone online in a couple of years so not up on what is needed there.
Good luck with your return.