As for screenshots, you can also upload them to a photo storing and editing provider like e.g. photobucket or postimage, it is free..simply need to create an account.
Then the screenshots, which are in newer versions under "IL-2 Sturmovik 1946\MyScreenShots" and in older versions right in the game folder, can be uploaded as jpegs...
In photobucket, once chosen and uploaded (need to choose the folder where they are and then select them), you can view them in the library and then with their IMG codes copy them and paste them here e.g.
Not sure if postimage is only German
...but it works the same.
There are many of such providers, principle is always the same:
Chose your screenshot, it helps if you have a photo software like the free "IrfanView" installed.
Then copy and paste the shots e.g to your desktop and upload them-if they are in tga format, open them, click "save as" and select a JPEG format, then save. Makes upload speedier.
If you then get the image codes you can copy and paste these to a forum.
Hope that was not too complicated, it is easy once done a single time.