If you have any problems let me know, and i'll try to go through detailed exactly what to do.

I´m also interrested in getting the fully rated A4 into the Dgen.
Would you please explain exactly what I have to do because since yet I only got the europlanes.dat changed so what´s next?

Thank´s in advance for your help =)

will do tomorrow, late now here.

There is an even easier method:

In "x:\Program Files\Ubisoft\IL-2 Sturmovik 1946\DGen" folder find the plane list of the campaign you chose. For example "planesDeC.dat", or "planesJAA.dat".

There you can add any plane you want, in any time period, for example:

[Rzhev42]
FW_190A4
FW_190A4FR
BF_109F4
BF_109G2

When you start the campaign, now you can choose the new plane from the list.

IIrc, this may cause the campaign to crash at some point. I once tried some simple tricks and they didn't work out 100%.

That will work kinda as long as the plane is already recognised by Dgen

if you don't add a 'new' plane to the europlanes.dat that will not work.

plus you are likely to get mission errors/dgen crashes if you don't add it to the classes file and the campaign .db file.